San Francisco is generic white culture? It's 42% non Hispanic white, and has the Mission, which has a long Hispanic tradition dating back to Spanish times, the Castro which is noted for its gay community, and the oldest Chinatown in the US. Go home, you're drunk.
1-I'm only talking about the whites in San Francisco.
2-San Francisco doesn't today (I suppose it did in Dan White's time) have any real "ethnic" white neighborhoods. The white areas are all very integrated and full of whites from all sorts of ethnic backgrounds. The Castro is actually a perfect example of this since it's a gay neighborhood, not one with any type of ethnic flavor.
I'm sure these people totally agree with you.
http://www.russiancentersf.com/
http://www.irishcentersf.org/
https://www.jccsf.org/
Those aren't entire NEIGHBORHOODS.
SF has a "Little Russia" neighborhood.
Poll
