No doubt, but the connection between a violent nation and an even more violent police force can hardly be over looked, who knows what one came first. If you were to simply tame the police force then anarchy would ensue. Would seem more logical to cool down violent cultures/gun crime then the level of police hostility would also drop. At some point respect has to be had for police officers but I understand that can no be given if they are hostile. Only fear or hatred exists then.
Put yourself in the shoes of a white police officer. You pull a black man over for some minor offense and he gives you the usual ''it's coz I'm black'' routine, x that by how ever many, it's going to get on your nerves after a while no matter how professional you are. It may even push you into becoming racist. Pull another person over on a basic routine stop and he's one of those smart arsed self entitled anti establishment type who thinks he knows all about law and wants to make things as difficult as possible. The next guy you pull over seems ordinary, you ask him to step out the car, he reaches into his shorts and you're forced to shoot him. They riot in town saying it was an unlawful killing of a ''good lad'' despite the kilo of cocaine in possession that was surely planted by the government to cover the cops ass. This same police officer tells his work mates how his job is impossible, they speak of similar difficulties and they all reinforce the negativity of a unwinnable situation.
I can not for one second think all police officers join the force with nothing but malice inside. I think the large majority of the bad ones are human beings who were trying to do good but slowly broken by the impassable hatred of society and horror stories from previously broken officers.