It's not just bad press--the city is fundamentally mismanaged and not safe. Car break ins are shockingly common and not at all addressed by SFPD. You can get violently robbed in public and no one is going to intervene.
In other cities it mostly happens in the 'bad' parts of town so it's easier to avoid. In SF, it happens frequently at the most visited tourist spots and most expensive housing areas--Alamo Square, Twin Peaks, Fisherman's Wharf, North Beach, Marina are all now targets because criminals know that's where the highest concentrations of wealth are and there are no consequences.