A thug killed an aged, demented man by firing a rather dangerous "non-lethal" weapon, and was acquitted for it.

I am sure that several thugs could have subdued him. The hospital staff could have done so, with some persistence and thought.

Ferguson thugs want to try out a kind of bullet that is less likely to kill (but can still kill). They already have many other weapons that are more likely to injure people than to kill.

What's wrong with them is that they use these weapons when they should not.