Why are black people in san francisco so sketch?

as a culinary and pastry major they have amazing food, good scenery, good weather, people are decent most are fine but the black people their imo are sketchy not as much as the ones here in Hawaii. last time i went some black girl was making some comment to this black bum saying he smells like alcohol and starting shet on the cable car -.- idk about you but if a girl said something like that here chances are you'd get followed home and raped