Yeah agreed. I support the need for police as an institution. It's naive at best to believe we could function as a society without a police force (leave it to vigilantes? Give me a break). Police officers, when they're not corrupt violent playground bullies turned adult, are brave individuals doing a valuable public service that is very dangerous and doesn't pay well, and is incredibly thankless.
That said, we have a big problem with police culture and the role of police in America that is a really bad thing and that needs to change and improve. The position attracts a disproportionate number of said grown-up schoolyard bullies, and many police departments, rather than putting in the legwork to identify and weed out these candidates before they become police, instead turn a blind eye or actively encourage their sort. The result is that we have a lot of bad cops. Add to that the training given (and lack of training in important areas, too), and the increasing militarization of police forces, and you get where we are today, with police brutality running rampant. But there are a whole lot of good cops who don't abuse their power and who help people, too. I support those police, and I'm not so naive as to think we could function without a police force. So I support the institution as a concept as well. Just not the way it is now.