.. I live in Australia .. scroll up ..
This is an issue law enforcement agencies need to deal with.
"Manuel Ramos, a police officer from Fullerton, California, has been charged with second degree murder for allegedly beating a mentally-ill homeless person to death last year. His co-worker, Officer Jay Cicinelli, faces charges of involuntary manslaughter and excessive use of force".
The system is not perfect by any means & these situations occur from time to time. All you are focusing on is a few instances of police abuse to based your arguments on yet when you look at the statistics of police call outs to call outs that end in police beatings .. these incidents are few & far between.
They are people like you & me .. human. They have a job to do which in itself is dangerous enough. I'm not saying what they did is right or excusing them for their actions. But look at the overall picture before you single out 1 or 2 instances & imply this is all the reason why the average person needs a gun. Laughable & flawed logic ..