There is, of course, no excuse for what the officers in the video have done, and they deserve everything that is hopefully coming to them.
Though, it does always make me sad to see how little respect police officers get. Especially among teenagers, the common perception of police officers is that they are "Fucking oppressive pigs". Anytime a single police officer does something wrong, everyone gets up in arms against the police force in general. It is one case where people let their feelings against a very, very small proportion of a group of people decide their feelings on the whole group. I've never had a negative run-in with the cops, and, for the most part, I'm sure most of you haven't either, unless you were doing something illegal.
When I hear in the news about a police shooting, it makes me sad that someone is dead, but, even more so, I feel for the thousands of other police officers who did nothing wrong, who are going to get shit for it for a long time, when they are just trying to perform the duties of their job, which, some of you might forget, is trying to protect you. I know of very few cops who wanted into the force in order to begin a oppressive regime, most of them just want to help people.