I can't remember when this happened exactly, but a couple months ago some Denver cops stopped a man riding a bicycle, and they ended up beating the crap out of him, and then they lied through their teeth about it. They said that the man threw a punch and assaulted one of the officers, but someone caught the fight on tape and the man the cops attacked didn't do anything; he didn't even defend himself when they were punching him in the head. The case went to trial and the cops were caught in their lies when the tape was played as evidence.
TO PARAPHRASE - This doesn't surprise me in the least.