As for California law, yes they can dictate certain restrictions, but since the latest USSC ruling, they are limited. That latest ruling was one of the best for decades. They said, WE, have a right to own guns, according to the 2nd Amendment. Didn't really think I'd see that in my time. Too bad it was 5 to 4...still we won! It won't be over-turned anytime soon.
No, I’ve never attended a public protest of any kind. I seem to recall you asked me the same question once before here, years ago.