I can tell you first hand that the neighborhood has been overrun by men like Evan Snow.
Considering you live in Chicago and that Rebecca and I actually live in Bernal Heights I think we have a much better perspective on the situation.
Where I come from you don't call the cops because you think you saw "a Mexican crazy man waving a gun around". If you see something, you leave, and you don't say anything to anyone. If you don't be a snitch then people don't get shot.
If you move from fucking Iowa and you think San Francisco is like adult Disneyland and you parade around town with your white ear buds and you're totally oblivious to reality, you might think that the SFPD is like the security guards at the mall and think you need to call them when you see some "Mexican kids hanging on the street in a pack".
The cops have fucking handguns and are very familiar with using them throughout years of gang violence in the Mission and Bernal. People who live in these neighborhoods don't look forward to having the police roll up searching for a Mexican with a handgun. Bullets fly in all directions. Completely innocent people get gunned down. Someone acting scary and just having a bad day but not hurting anyone gets gunned down. This shit happens all the time. I've been watching people get shot for no god damned reason for years and years and years.
STOP SNITCHIN'