As someone who lives in California, and has experienced as much racism here as I had in the Midwest, it's infuriating.
The truth is that, as long as there are places in the world where the majority benefit from institutionalized and systemic racism, there will be racism. California isn't immune to racism, sexism, homophobia, transphobia, etc. The rhetoric that only Southern states in the US are racist really needs to fucking stop. It's not helping the discussion, or adding to the extermination of hateful, bigoted beliefs and systems.
Absolutely, I also live in California, specifically Orange County where there are still tons of Trump supporters and their ilk (not to say racism is exclusive to the Republican party, because it definitely isn't). I have seen posts on this forum that amount to "nuke the south" simply because those states turn red in a Presidential election... when the coastal and urban parts of this country can be just as (and sometimes even more!) racist.
Only by stripping away the systems of power that enable systemic oppression can work be done to make things better.