So, let me rephrase: do you have trustable statistics showing that police brutality is not systemic? How about all those 'exceptional' cases where the system very much seems to work against correcting itself by protecting the offending police officers?
See, I'm not surprised that in a ~300M nation there are lots of cases of authority acting violently and that we only hear about those cases where people are treated badly - but what's worrying to me is how bad the 'exception handling' usually appears to work. If your program throws an exception every 10'000 users, but the exception leads to the user being electro-shocked, jailed and possibly loosing his job, wouldn't you throw in some additional exception handling?