Here's my counterpoint to your argument.
Obviously I do not want to be one of the victims. However, I can defend myself and my family from criminals thanks to .45ACP. Most violent criminals do not have the power of the state backing them either. When something is sanctioned and given the power of law, there is much more of an authority there than street criminals do not have. DA and Law Enforcement have a lot of authority. Much of it is actual authority, but their persuasive authority is much stronger. They have the media access, and titles which causes a lot of average citizens to think they are automaticaly right until proven wrong.
Now not all DA's are bad, and not all cops are crooks. In most towns, most aren't. However, there's a reason why defendants have a right to a fair trial. The founding fathers knew what a tyrannical government was, and we have safeguards against that. Everyone has a right to a fair trial.
On the argument of “government has the monopoly on the legal use of deadly force”,
I yield.