Just some of my musings on this.
I used to follow Popehat pretty closely up until the summer, and the authors often write about police brutality. However, I got turned of by the constant libertarian vibe and the the impression that the authors thought all law enforcement officers were evil. I don't want to see all law enforcement individuals this way, because that's utterly terrifying and goes against everything ingrained in me as a child. Basically that the the cops were the good guys and what not. However one of the things that I took away from Popehat was that, FBI apart, there are no national standards for law enforcement conduct, training, and oversight of police departments. In addition, I find it to be problematic when the police force for a region is different in ethnicity from the area they are bound to maintain law in. Unfortunately, America's problems with race cannot be overlooked in many of these situations. Whether race actually played a role in many of the recent high profile authority figure killing an innocent cases, the aftermath of each of these events has certainly included race.
On a personal note, I have found the two or three times that I have interacted with police officers to be utterly terrifying (speeding ticket, didn't put the new sticker on an old license plate). I acknowledge that my experiences have fallen on only one side of the spectrum, so that my feelings are biased, but I think the lack of positive interaction also says something. I become afraid whenever I see a cop car on the road. Having one follow you for a time is utterly nerve wracking, even though I know I haven't been seriously in the wrong. I think what has made me so uncomfortable with police is how they approach their jobs. None of them have been friendly, or nice, or smiled. I've gotten business-like but understanding with the plate issue (I had the new sticker in my glove compartment), and what felt like hostility for the speeding ticket. What happened in both incidents really was that I was no longer a person to the LEO. Dehumanization is not something I think that law enforcement should practice, particularly among the officers who most frequently encounter their protected.
I'm not sure where this came from originally, but this is a map by the cato institute about botched paramilitary raids that I found interesting.
http://www.cato.org/raidmap?type=1 If you flip through the years, the number of incidents on average has gone up since 1990 (I didn't check before then, strapped for time). There were virtually no incidents on the map for 2011 to present interestingly enough.