You should know that I agree with you about how some cops go well beyond reasonable force. Still, those are the “cream of the crop” as far as the candidate pool is concerned. If you doubt it, what do you suggest they do to improve their screening methods?
And those more rigorous “private sector” screenings? Show me one that is more thorough and intrusive…and is not for a government contractor. In every single case that I know of where the “private sector” screening comes anywhere close to this, it’s because they are doing work for the public sector. Yes, when you work for the government (either directly or indirectly), you will likely have to meet higher standards for employment.