Wow! The normal citizen would say "how much threat can a handcuffed guy sitting in the back of a cruise pose"? I know, I wasn't there so I can't know the whole story. But still...there are some crazy people in the world.
Cops get away with all kinds of stuff that you and I wouldn't. I was following a DC cop this morning and he kind of rolled through a stop sign, then at the next light, encroached into the crosswalk, which I'm SURE I'd get cited for. Of course I haven't gotten shot at before. Yet...you never know in this area.