"There are plenty of good cops out there, ..."
I have heard of no evidence for there being ANY good cops. If there were any, it would be in the news that instead of various projects uncovering criminal behavior, it would be the cops, themselves, and it never seems to happen. There are cops who are murderers, rapists, thieves, and just plain thugs, and the rest of them are guilty of covering for the criminals. What happened to the NYPD officers who gang sodomized that Jamaican? The POLICE OFFICERS UNION pressured the city not to throw the SOBs in jail.
Nonsense. Bad news sells papers. "Cops beat defenceless grandmother" will get a lot more people buying newspapers, than "Cops help little old lady cross busy street safely". There are good cops and there are bad cops. The good cops outnumber the bad ones - vastly, I trust, as the selection process will help in that respect.