It is really not "the public" at large, at least not in many cases. The police seems to be profiling and directing excessive force towards non-Caucasians, as it was so obvious in the shocking incident in Texas.
This case, which sort of crystallized the problem, all started with a typical overweight Walmart white-trash female attacking a group of noisy (?) children in the pool.
For the outsider, the US looks a very unpleasant place to be if you're not white. Not to mention the huge incarceration rate for minor offenses, and the proportion on non caucasians there.
I used to come to the US at least once a year, staying for up to 2-3 weeks on holiday. I haven't in a long time, and I will probably not anytime soon.
It's increasingly becoming a sad and scary place.