ITT: people who don't understand that if the article takes place in a specific geographical region, then general comments about said article are also referring to the same geographical region.
There might be an issue with training, but the real problem is accountability. Cops in the USA can get away with a lot, up to and including murder. If police were punished for abusing their power, then it would happen much less often.
It is basic political science theory that the role of police is to do violence against members of a state on behalf of that state. That is their only fundamental role that can't be done by anyone else. Everything else that cops do is a mixture of PR on one hand and misappropriated power on the other. Whatever you think your cops are doing for you could be done better by an organization that doesn't exist to push your shit in.