The cause for cops murdering innocent civilians is that the cost for doing so is zero. Increase the cost and the problem goes away. Moreover, bad cops are bullies who thrive on bossing people around without consequences. Introduce consequences, and these lowlives who shouldn't be cops find a more suitable profession.
> this is how our current prosecution system works and it fails on so many levels.
It deters me from killing people who pissed me off.
> Cops will still shoot people, because they will rather go to jail then be dead.
And guess what, that's fine. There is probably no perfect solution, you know, the kind where nobody gets shot and no cop goes to jail. It's almost as if the real world requires some sort of compromise. Who would have thought?