None of the witness accounts appear to say that anyone shouted police.

Its a sad indictment that no-one intervened to help, although if someone had a gun, highly understandable.

I can't believe the callous attitude of some of those on this thread who seem to think its acceptable to murder the guy, as he didn't do the right thing for whatever reason. He may have been deaf, aggrophophic, or a multitude of other things.

They would change their tune if it was a member of their family