I think I can speak for everyone here when I say that we agree with you that cops should go on trial for murder when they do so, and I also agree with you that cops get away with a lot more than any normal citizen could dream of getting away with. The problem is, you lump all of the good cops in with the bad cops since they wear the same uniform. It's no different than saying all Christians are like the Westboro Baptist Church, or that all Muslims are like the terrorists, or that all football players are like Ray Rice