A lot of it is how the police largely pick on the most vulnerable populations--poor people, minorities, ex-cons, people with drug problems, whatever. They're n

A lot of it is how the police largely pick on the most vulnerable populations--poor people, minorities, ex-cons, people with drug problems, whatever. They're not dumb, they know that if they tried to shake down drug-addled sons of senators, they'd be fired. So, like all abusers, they pick targets that can't fight back. And those targets are the ones with the least political/economics agency, the fewest connections, the least ability to respond to police brutality, whatever. And the middle and upper classes--the only voices ever represented in media (excluding the current endless spate of articles interviewing poor Trump voters)--of course they not only have no problem with the police, they don't know anyone who's been shaken down. As a general rule, at least. So, you look at the predominant voices in the media, and they have no problem with the corruption of cops, and they don't know anyone who does. Gosh, even my nominally progressive sister goes into any discussion about police brutality with an assumption that whoever got shot deserved it. And she's generally aware of social issues! The biases are baked in so deep, and so uncomfortable to unpack, it's easier to just to turn away from it all.