Lol @ the people saying "they should be trained better". It doesn't matter how much training you have. Training for years doesn't miraculously make you an infallible hand to hand combat master. Even professionals that train every day of the week from the time that they're children to fight in the MMA could be caught by a stray punch and knocked out by some random yahoo. Real life is not like the fucking movies people. When shit goes down and adrenaline starts pumping everything changes. You don't have time to calmly collect your wits and make split second decisions that could cost you your life like you people sitting in front of your PCs think they should be able to.
No amount of training will make ANYONE into these combat masters some of you seem to think cops should be. I don't think lethal force is ever a good thing but things are never as black and white as people would like them to be.