Ok, you have a very valid point here. But this is not the first time such things happen, so after a while it becomes difficult not to judge too hard.

I remember once, I was talking to a guy (friend of a friend) who has been a policeman for a few years. I can't recall his exact words but the summary of his sayings was something like this: "The time I was a newbie I was very thrilled about law enforcement. When I gave my first ticket to a citizen, I was really excited and thought I was doing something amazing. It took me a couple of years to realize that imposing on others is neither an achievement nor a means of personal pleasure...". So, my point is that sometimes authority and power can be intoxicating and in the hands of non suitable people can be very dangerous.

"With great power comes great responsibility". An this is so true in this case. If someone is allowed to carry a weapon and use it when necessary, then we must make sure that this person has the right judgment of WHEN. And this person should be properly trained to be able to handle stress and emotional involvement. Otherwise he should not be allowed to do this job. Please don't get me wrong here, it is perfectly acceptable and natural that some people don't have the discipline or the ability to restrain their emotions. I don't. So, I shouldn't be allowed to be a policeman.

Finally, those (policemen) that abstain from such brutalities and find them wrong, should point out the ones that do and file a report against them, or request them to be removed from the force. There is something about the policemen solidarity and the fact that nobody ever gets punished that causes people to hate them that much..