Edit, to the poster below: There have been many cases where a man and women have sex and the woman later claims she was raped. Try to find a case of word vs. word (no other evidence) and the man was found not guilty. Now, try to find the opposite.
Not all cops are crooked - but the Blue Code of Silence puts the culpability for the crooked cops' crimes squarely on the police force as a whole. If the police forces of the US even showed some inclination of willingness to police the actions of their own, then we wouldn't have most of these problems.
Here in Seattle we've had an unprovoked shooting of a homeless man, to which the officer involved was allowed to resign gracefully, despite all parties agreeing that the was no provocation nor justification. Another officer body-slammed an innocent man (without warning, provocation, or identifying himself) into a wall so hard he is now in a vegetative state. This man remains on the force. Similarly, another officer was caught on store surveillance taking his rage out on a teenager in a convenience store, stomping on his face, after a failed drug bust next door. That officer remains on the force also.
Not all cops do these things, but they are all guilty of covering up these acts and ensuring that, even if they do get out to the public, that no real consequences occur for the officers involved.
I will have zero trust for any police force until they have proven their ability and willingness to police themselves.
> "Try to find a case of word vs. word (no other evidence) and the man was found not guilty. Now, try to find the opposite"
Huh, could've sworn I typed in "news.ycombinator.com" not "reddit.com/r/mensrights"
However if most of them are crooked, it is pretty safe to informally say "screw them all" (as opposed to linking to scientific studies and then proclaiming that "screw 59.45% of them" or something like that).
And btw, those that are engaged in cover-up of abuses of fellow cops are crooked just the ones engaging in abuse.
Police officers do have a sworn duty. But some of them do not uphold their oaths. Some of them even break the law outright. It's therefore quite possible to have an issue with law enforcement, separate from the laws themselves.