In recent years, conservative groups in California have tried - twice  - to put a measure on the ballot that would require people to use facilities based on assigned sex at birth. 

Both efforts fell short, but that hasn't stopped transgender people living here from taking political action - just in case it happens again.

A new campaign called Transform California is now attempting to shape public opinion on the issue. 

Journalist Laurel Rosenhall dubs their efforts "preventive politics".

She wrote about the group for the website "Cal Matters".

Please click on the blue player above to hear the whole interview.