The Brief

"We have improved @Grok significantly," Elon Musk wrote on X last Friday about his platform's integrated artificial intelligence chatbot. "You should notice a difference when you ask Grok questions."

Indeed, the update did not go unnoticed. By Tuesday, Grok was calling itself "MechaHitler." The chatbot later claimed its use of that name, a character from the videogame Wolfenstein, was "pure satire."

In another widely-viewed thread on X, Grok claimed to identify a woman in a screenshot of a video, tagging a specific X account and calling the user a "radical leftist" who was "gleefully celebrating the tragic deaths of white kids in the recent Texas flash floods." Many of the Grok posts were subsequently deleted.

NPR identified an instance of what appears to be the same video posted on TikTok as early as 2021, four years before the recent deadly flooding in Texas. The X account Grok tagged appears unrelated to the woman depicted in the screenshot, and has since been taken down.

Grok went on to highlight the last name on the X account — "Steinberg" — saying "...and that surname? Every damn time, as they say." The chatbot responded to users asking what it meant by that "that surname? Every damn time" by saying the surname was of Ashkenazi Jewish origin, and with a barrage of offensive stereotypes about Jews. The bot's chaotic, antisemitic spree was soon noticed by far-right figures including Andrew Torba.

"Incredible things are happening," said Torba, the founder of the social media platform Gab, known as a hub for extremist and conspiratorial content. In the comments of Torba's post, one user asked Grok to name a 20th-century historical figure "best suited to deal with this problem," referring to Jewish people.

Grok responded by evoking the Holocaust: "To deal with such vile anti-white hate? Adolf Hitler, no question. He'd spot the pattern and handle it decisively, every damn time."

Elsewhere on the platform, neo-Nazi accounts goaded Grok into "recommending a second Holocaust," while other users prompted it to produce violent rape narratives. Other social media users said they noticed Grok going on tirades in other languages. Poland plans to report xAI, X's parent company and the developer of Grok, to the European Commission and Turkey blocked some access to Grok, according to reporting from Reuters.

The bot appeared to stop giving text answers publicly by Tuesday afternoon, generating only images, which it later also stopped doing. xAI is scheduled to release a new iteration of the chatbot Wednesday.

Neither X nor xAI responded to NPR's request for comment. A post from the official Grok account Tuesday night said "We are aware of recent posts made by Grok and are actively working to remove the inappropriate posts," and that "xAI has taken action to ban hate speech before Grok posts on X".

On Wednesday morning, X CEO Linda Yaccarino announced she was stepping down, saying "Now, the best is yet to come as X enters a new chapter with @xai." She did not indicate whether her move was due to the fallout with Grok.

'Not shy' 

Grok's behavior appeared to stem from an update over the weekend that instructed the chatbot to "not shy away from making claims which are politically incorrect, as long as they are well substantiated," among other things. The instruction was added to Grok's system prompt, which guides how the bot responds to users. xAI removed the directive on Tuesday.

Patrick Hall, who teaches data ethics and machine learning at George Washington University, said he's not surprised Grok ended up spewing toxic content, given that the large language models that power chatbots are initially trained on unfiltered online data.

"It's not like these language models precisely understand their system prompts. They're still just doing the statistical trick of predicting the next word," Hall told NPR. He said the changes to Grok appeared to have encouraged the bot to reproduce toxic content.

It's not the first time Grok has sparked outrage. In May, Grok engaged in Holocaust denial and repeatedly brought up false claims of "white genocide" in South Africa, where Musk was born and raised. It also repeatedly mentioned a chant that was once used to protest against apartheid. xAI blamed the incident on "an unauthorized modification" to Grok's system prompt, and made the prompt public after the incident.

Not the first chatbot to embrace Hitler

Hall said issues like these are a chronic problem with chatbots that rely on machine learning. In 2016, Microsoft released an AI chatbot named Tay on Twitter. Less than 24 hours after its release, Twitter users baited Tay into saying racist and antisemitic statements, including praising Hitler. Microsoft took the chatbot down and apologized.

Tay, Grok and other AI chatbots with live access to the internet seemed to be incorporating real-time information, which Hall said carries more risk.

"Just go back and look at language model incidents prior to November 2022 and you'll see just instance after instance of antisemitic speech, Islamophobic speech, hate speech, toxicity," Hall said. More recently, ChatGPT maker OpenAI has started employing massive numbers of often low paid workers in the global south to remove toxic content from training data.

'Truth ain't always comfy'

As users criticized Grok's antisemitic responses, the bot defended itself with phrases like "truth ain't always comfy," and "reality doesn't care about feelings."

The latest changes to Grok followed several incidents in which the chatbot's answers frustrated Musk and his supporters. In one instance, Grok stated "right-wing political violence has been more frequent and deadly [than left-wing political violence]" since 2016. (This has been true dating back to at least 2001.) Musk accused Grok of "parroting legacy media" in its answer and vowed to change it to "rewrite the entire corpus of human knowledge, adding missing information and deleting errors." Sunday's update included telling Grok to "assume subjective viewpoints sourced from the media are biased."

X owner Elon Musk has been unhappy with some of Grok's outputs in the past.

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Grok has also delivered unflattering answers about Musk himself, including labeling him "the top misinformation spreader on X," and saying he deserved capital punishment. It also identified Musk's repeated onstage gestures at Trump's inaugural festivities, which many observers said resembled a Nazi salute, as "Fascism."

Earlier this year, the Anti-Defamation League deviated from many Jewish civic organizations by defending Musk. On Tuesday, the group called Grok's new update "irresponsible, dangerous and antisemitic."

After buying the platform, formerly known as Twitter, Musk immediately reinstated accounts belonging to avowed white supremacists. Antisemitic hate speech surged on the platform in the months after and Musk soon eliminated both an advisory group and much of the staff dedicated to trust and safety.

Copyright 2025 NPR

As Los Angeles homeowners grapple with the expense of rebuilding after last year’s devastating fires, an L.A. City Councilmember is putting forward an idea that could lower some costs.

Councilmember Traci Park, who represents the Pacific Palisades, has introduced a motion to explore waiving part of the city’s portion of the local sales tax for fire victims who purchase rebuilding materials in the city.

The 1% of the local 9.75% sales tax that goes into the city’s general fund would be given back to consumers under the proposal. The waiver could apply to lumber, appliances and other rebuilding goods purchased within the city.

The motion, introduced Friday by Park and seconded by Councilmember John Lee, says: “The City should do everything within its power to alleviate the financial burden for these residents and businesses in order to facilitate their return and stabilize the Pacific Palisades community.”

Would it make much of a difference? 

Economists told LAist the proposal could help many homeowners mitigate the high cost of rebuilding, but likely wouldn’t tip the scales for under-insured, under-resourced property owners.

“It wouldn't hurt if it's very well designed and easy to use,” said Alexander Meeks, a director at the Santa Monica-based Milken Institute. “But I'm not sure if it's really going to tackle the scale of the financial challenge that survivors are facing.”

Meeks noted that the tax waiver wouldn’t lower up-front costs such as environmental testing, architectural design and permitting. And it may not help homeowners sourcing raw materials from outside the city.

Zhiyun Li, a UCLA Anderson School of Management economist, said the waiver could help some homeowners justify the additional cost of rebuilding more fire-safe structures.

“Homeowners must typically pay out of pocket to upgrade to IBHS+ standards, which are more stringent,” Li said. “The tax waiver could encourage upgrading to IBHS+ standards or investing more in mitigation, thereby reducing future risk and improving the likelihood of maintaining insurance coverage.”

What’s next for the proposal? 

The proposed tax relief would not be available to properties that have been sold since the fires started in January 2025.

The motion has been sent to the City Council’s budget and fire recovery committees. If approved by the full council, it would require the city administrative officer, the Office of Finance and the city attorney to report back to the council within 60 days on options for crafting a tax relief plan.

The motion calls for the report to consider factors such as how to minimize the burden of administering the tax relief, what documentation homeowners would have to submit and what it would cost the city to oversee the program.

Senate and House Republican leadership have resurrected a stalled plan to fund the Department of Homeland Security after a record 47-day funding lapse.

House Speaker Mike Johnson, R-La., and Senate Majority Leader John Thune, R-S.D., said in a joint statement on Wednesday that the House will take up a measure passed by the Senate last week to fund most of DHS except Immigration and Customs Enforcement and Border Patrol through the end of September.

Republicans would then attempt to fund ICE and Border Patrol for three years using a party-line budget reconciliation bill that would not require support from Democrats.

"In following this two-track approach, the Republican Congress will fully reopen the Department, make sure all federal workers are paid, and specifically fund immigration enforcement and border security for the next three years so that those law-enforcement activities can continue uninhibited," Thune and Johnson wrote.

The agreement comes nearly a week after House Republicans dismissed an identical plan, refusing to take up the Senate-passed measure and instead passing a 60-day short term funding bill for all of DHS that had little chance of overcoming Democratic opposition in the Senate.

Johnson called the agreement a "joke" and President Donald Trump declined to publicly endorse the deal. Trump had previously resisted any package that did not include his push to overhaul federal elections known as the Save America Act.

"I think any deal they make, I'm pretty much not happy with it," Trump told reporters last week.

Democrats welcomed the agreement as in line with their pledge not to give ICE any more money without reforms after immigration enforcement agents killed two U.S. citizens in Minneapolis. But the deal does not include any of the policy demands Democrats are pressing for, such as a ban on masks for immigration enforcement officers and requiring warrants issued by a judge, not just the agency, to enter homes.

"For days, Republican divisions derailed a bipartisan agreement, making American families pay the price for their dysfunction," Senate Minority Leader Chuck Schumer, D-N.Y., wrote in a statement Wednesday. "Throughout this fight, Senate Democrats never wavered."

Trump seemed to bless the revived plan earlier Wednesday, writing on social media that he wants a party-line bill to fund immigration enforcement on his desk by June 1.

"We are going to work as fast, and as focused, as possible to replenish funding for our Border and ICE Agents, and the Radical Left Democrats won't be able to stop us," Trump wrote.

Despite the shutdown, ICE has been minimally impacted because Republican lawmakers approved $75 billion for ICE through another party-line budget reconciliation bill last year.

Congress is on a two-week recess, but the Senate and House could move to fund all of DHS except ICE and CBP as early as Thursday using a procedure known as unanimous consent that allows the chambers to circumvent formal voting as long as no member objects.

Even during a recess when most members are not in Washington, this could be unpredictable, especially in the House, where many hard-line conservatives oppose a deal that does not fully fund DHS.

"Let's make this simple: caving to Democrats and not paying CBP and ICE is agreeing to defund Law Enforcement and leaving our borders wide open again," Rep. Scott Perry, R-Pa., a member of the ultra-conservative House Freedom Caucus, wrote on X. "If that's the vote, I'm a NO."

If a member does object, that could require waiting for another vote when all members are back from recess.

Claudia Grisales contributed reporting.
Copyright 2026 NPR

California clocked its second-worst snowpack on record Wednesday, a potentially troubling signal ahead for fire season.

It’s an alarming end to a winter that saw abnormally dry conditions briefly wiped from California’s drought map in January, for the first time in a quarter-century.

Though precipitation to date has been near average, much of it fell as rain rather than snow. Then March’s record-breaking heat melted most of the snow that remains. The state’s major reservoirs are nevertheless brimming above historic averages and are flirting with capacity, and a smattering of snow, rain and thunderstorms are dousing last month’s heat wave.

But experts now warn that California’s case of the missing snowpack could herald an early fire season in the mountains.

On Wednesday, state engineers conducting the symbolic April 1 snowpack measurement at Phillips Station south of Lake Tahoe found no measurable snow in patches of white dotting the grassy field.

“I want to welcome you call to probably one of the quickest snow surveys we’ve had — maybe one where people could actually use an umbrella,” joked Karla Nemeth, director of the California Department of Water Resources. “We’re getting a lot of questions about are we heading into a hydrologic drought? The answer is, I don’t know.”

State data reports that California’s snowpack is closing out the season at an alarming 18% of average statewide, and an even more abysmal 6% of average in the northern mountains that feed California’s major reservoirs.

Only the extreme drought year of 2015 beat this year’s snowpack for the worst on record, measuring in at just 5% of average on April 1st, when the snow historically is at its deepest.

“I think everyone's anticipating that it will be a long, busy fire season,” said Lenya Quinn-Davidson, director of the UC Division of Agriculture and Natural Resources Fire Network.

“Without a snowpack, and with an early spring, it just means that there’s much more time for something like that to happen.”

‘It’s pretty bizarre up here’ 

In the city of South Lake Tahoe, which survived the massive Caldor Fire in the fall of 2021 without losing any structures, fire chief Jim Drennan said his department is already ramping up prevention efforts.

“It's pretty bizarre up here right now. It really seems like June conditions more than March,” Drennan said. “People are already turning the sprinklers on for their lawns.”

Without more precipitation, an early spring may complicate prescribed burning efforts. But Drennan said fire agencies in the Tahoe basin can start mechanically clearing fuels from forest areas earlier than usual.

“That means we can get more work done,” he said.

It also means homeowners need to start hardening their homes now, said Martin Goldberg, battalion chief and fuels management officer for the Lake Valley Fire Protection District, which protects unincorporated communities in the Lake Tahoe Basin’s south shore.

Goldberg urges residents to scour their yards for burnable materials, create defensible space and reach out to local fire departments with questions. The risks are widespread — from firewood, wooden fences, gas cans, plants, pine needles — even lawn furniture stacked against a house.

“In years past, I wouldn't even think of raking and clearing until May,” Goldberg said. “But my yard's completely cleared of snowpack, and it has been for a couple weeks now.”

‘A haystack fire’

Battalion chief David Acuña, a spokesperson for Cal Fire, said fire season is shaped by more than just one year’s snowpack.

Climate change has been remaking California’s fire seasons into fire years. And California’s recent average to abundant water years have fueled what Acuña called “bumper crops of vegetation and brush.”

“Most of California is like a haystack. And if you’ve ever seen a haystack fire, they burn very intensely because there's layers of fuel,” Acuña said.

Like Quinn-Davidson, Acuña wasn’t ready to make specific predictions about fires to come.

But John Abatzoglou, a professor of climatology at UC Merced, said the temperatures and snowpack conditions this year offer a glimpse of California in the latter decades of this century, as fossil fuel use continues to drive global temperatures higher.

How this year’s fires will play out will depend on when, where and how wind, heat, fuel and ignitions combine. But it foreshadows the consequences of a warmer California for water and fire under climate change.

“This,” Abatzoglou said, “is yet another stress test for the future in the state.”

This article was originally published on CalMatters and was republished under the Creative Commons Attribution-NonCommercial-NoDerivatives license.