I worked as both a police officer and later as a correctional officer. I am offended by your comments about both professions. They are made out of ignorance of the jobs and the reasons why people end up in prison or why they end up getting restrained of even shot by police. And you feel the need to keep repeating yourself over and over, all while showing little interest in learning the facts.
It is not easy to convict anyone. For instance, statistically, an average burglar commits 20 burglaries before he is arrested. He is arrested 5 times before he is convicted. That means the average burglar commits 100 burglaries before he is imprisoned. In my own experience, the man who burglarized our home was caught with out property, and was selling some of it at a pawn shop, yet he was no even charged with burglary. They could not prove he stole anything. He was previously convicted of burglary several times, yet they only convicted him of possession of stolen property, and sentenced him to 4 years in prison. He served 3 years. He got out a year ago. Last week, my neighbors saw someone in my yard after dark with a flashlight who fit the description of the same man who was convicted before. It is not enough to arrest anyone.
People in prison deserve to be in prison. You should be thankful they are locked up. Most are sociopaths and life-long criminals who are predators, always looking for victims. Our criminal justice system has failed us only because they have failed to convict most of the criminals that are charged with crimes.
Time after time, incidents the media reports on that result in police shootings, result in comments by civilians who rush to judgment with little information to make an intelligent conclusion. But it never stops them from making comments. Then, days or months later, when the investigations are completed, and the officers are cleared of wrong-doing, those same people refuse to come forward and retract their false statements and false conclusions.