San Francisco was only ever really tolerant of the right kind of differences, AFAICT. For example, it appears to be a near-complete political monoculture. It even has a prominent road in the largest city park named after a living and active Democratic politician, just to make sure everyone knows whose turf it is.
More recently, there is the animosity against the tech crowd, which I don't need to describe.
More recently, there is the animosity against the tech crowd, which I don't need to describe.