I think it's entirely dependent on the area, and using breathalyzer tests in one city as a proxy isn't very convincing. I grew up in a mostly white, upper middle class, Boston suburb with next to no violent crime. All I've ever seen the police do is harass teenagers, such as myself for J walking many years ago, or breaking up house parties.

I spent freshman year of university in The Bronx, an borough in NYC which has highest poverty rate of any urban area in the States and by far the most dangerous of the NYC boroughs. I remember early on being afraid of seeing cops outside the bar we all wen't to that openly served minors, but they had more important things to do, such as protecting us on the walk back to campus. J walking is almost encouraged just so you keep you moving. The people police have to deal with are some of the scariest I've ever seen.

Further, every couple days we get an email about students getting mugged or worse, and every time the assailant is black or Hispanic. Without fail, despite 50+ notices at this point. Please, tell me how a cop can put away racial prejudices with statistics like that? Should they? Of course, but it's not that simple.

Ultimately I think the largest problem is the militarization of the police force. An army is supposed to fight an enemy, the police are supposed to protect citizens and mixing up the two becomes very dangerous very quickly.`

*Edit Typos and clarity