We have all seen the discourse on places like reddit or whatever, where even the positive comments about rough neighborhoods is like “just keep your head up, don’t use headphones, pay attention and you will be fine”
Like how much of this is just white people playing out fantasy scenarios in their cop brains? I feel like most of “bad neighborhood” discourse just comes down to 
Like sure there are places where you are more likely to get your place broken into or whatever and systemic racism tends to result in certain outcomes but I feel like most places like this are in the minority, and in fact this must be the case or gentrification wouldn’t happen 
“Rough” neighborhoods exist. Naive lefties can run into trouble based on an idea that all of the society’s problems can be reduced to propaganda. Fact is, some streets you have a much higher risk of encountering violence, and you aren’t necessarily going to find help from 911. Don’t fall into the trap of thinking that exploited communities are less reactionary than any other community. Bigots exist even in the “bad” areas because they’re just people.
In equal parts as police actively cause violence, they also neglect to provide any sort of safety for residents of these communities. This is why, in the worst examples, residents sometimes have to take justice into their own hands. The state intentionally fails to uphold even the most minimal standards for social life.
I don’t disagree with your overall point which I think boils down to basic humanism. “Bad” neighborhoods are full of normal people just trying to get by in a bad situation. Whatever real danger exists is also exaggerated because of racist, classist, and ableist reasons.