Most people here are very normal. The heaviest Democratic lean but normal folks. The is a slice of extremely radical youth and old salty anarchist. You might run into them, but they don't dominate the culture. They tend to dominate a few city blocks before the cops beat em down and then it's back to truffle oil french fries and artisinal ice creams. I'm half way to hating what this place has become. If anything it's generally way more rich, sedate and soulless than it used to be which just makes the radical stuff stand out that much more.
There's plenty of great people out here it's just that there's a rather large contingency of people with loud opinions on how terrible you are if you're white. The good news is that they are easy enough to ignore or interact with in a difference capacity.