The "swat teams," i.e. militarized police units, were removed from Ferguson. The result, calm, peaceful protests. Then, last night, someone sent them back in. The result: violence.
They say that those who don't learn from history are doomed to repeat it. Our country should have learned this lesson from the 1968 Chicago police riots, but it didn't. Far too many people become police officers because they crave the opportunity to bully and abuse others without penalty; the result, over and over again, is what happened in Ferguson.
I would like to suggest that it must be made clear to police officers that, when they put on that uniform, they are accepting the fact that it comes with a greater risk to themselve, just as, say, firement do without protest. They do not have a right to use deadly force unless they are damned sure that their own lives or the lives of others are in danger. If they violate this principle, they must be treated like any other murderer. No "paid leave," no "internal investigations-" prison, and for a long time.