That's a horrible policy. Shoot to kill the suspects...oops, this one got framed, that one hadn't done anything wrong, he just "looked guilty" because he was afraid of the cops, and that one? The officer who shot him was banging his girlfriend and didn't want the competition.

It sucks when criminals manage to escape justice, but it's far better to be lax on criminals than to punish the innocent along with them. It's very bad for society when innocence is no defense when you're accused of something.