Overall, cops tend to selectively enforce laws mainly against poor people, and do fuck-all about corruption and psychopathy in their own ranks. They're trained to be trigger-happy schizophrenics with a fetish for authority, and taught that it is ok and desirable to defend that insecure god image at all costs, including others' dignity, rights, and even lives. Basic social norms of respect don't even make it to the conversation.

Saying cops don't make the law is as facetious as saying the supreme court doesn't. They technically don't, but they do get to decide when and how to enforce them, if at all. Very ripe for the corruption we've actually been seeing.