As for "cops doing their job", its unfortunate that only the bad stories get to the media, but then again the bad stories shouldn't happen at all. A few years back a homeless man with a friggen stick outside of a McDonald's was shot to death by a number of officers because he wouldn't cooperate. Yeah, that stick sure is a lethal weapon. Better shoot him numerous times.
All I'm saying is that I probably have a horrible impression of cops because all I hear about them is when they screw-up. Unfortunate, but true. And maybe that's why other people are so quick to jump on cops as well.