1) Social Justice isn’t mainstream left, it’s a very loud and quite powerful subculture.

2) The mainstream left is way too big to be coordinated on a mailing list or over Twitter and couldn’t agree on San Francisco if that was true. If there was never a coherent Left position on the smoldering wreckage that is Detroit why would there be on SF?

3) SF is just going to keep regulating, taxing and not building housing until there’s an event that everyone decides means SF is no longer absolutely the best place to be if you’re into startups and it’ll dissipate into the general Bay Area and the US, like Detroit and Michigan after Detroit started burning.