The whole thing happened in about 4 seconds. It wasn't as if the cops were taking shoots at a corpse on purpose.
And what if these trigger happy guys had shot the wrong man?
They sent out 500 people looking for this guy because he shot a cop. Don't get me wrong I think the guy desreved to be shot, but why don't we extend the same force to nab other criminals? Are those lives not worth as much as a cops?