Longtime political activist Tom Hayden passed away Sunday in Santa Monica. He was 76.

Hayden was one of the Chicago Seven, a group of protestors charged for inciting a riot at the 1968 Democratic National Convention in Chicago. In later years, he became a politician. He ran for mayor in Los Angeles (losing to Richard Riordan) and he served in California's state senate and assembly for 18 years.

Take Two's Alex Cohen spoke with Todd Gitlin, who succeeded Hayden as president of Students for a Democratic Society, as well as Los Angeles Mayor Eric Garcetti, who knew Hayden for many years.

"It's a cliché, but sometimes clichés are true: he was the voice of a generation," Gitlin said.

Click the blue audio player to hear the full interviews with Todd Gitlin and Los Angeles Mayor Eric Garcetti.