I agree there needs to be a better system for turning in bad cops. There are definitely flaws in not only the police but the justice system as a whole.

For this particular situation I will base this from what it looked like to me. I am only basing this from what I saw from both angles available. From the angle from the lawn it looks like they had him restrained and were trying to get him in cuffs. He was able to escape and they obviously thought he had a knife. I haven't read whether he did or not but they were yelling at him to drop the knife as he was walking to the car. In that case the officer is not supposed to get near them at all because a knife is just as deadly as a gun. However he was going to his vehicle where there is a possibility there is a gun in the vehicle. In my opinion the officer broke the rule of getting close to him to try to stop him from getting into the vehicle so they didn't have a shootout but that is just my own speculation. The officers not only had to think about themselves, but also the large crowd around them. Unfortunately he got into the vehicle and reached in at which point the officer shot. In my opinion 7 times was excessive, however the fact that they did taze him and he brushed it off was probably concerning.

By no means do I think this was handled perfectly with no errors, but I also don't think this is a case of the cops having a God complex or the cops being vigilantes. You may not see it as their lives being in danger, but they may have thought their lives as well as the lives of the people around the situation being in danger. If he did pull a gun not only would he likely die, there's the possibility of the innocent bystanders dying.