Re: Thanks for the fish, tom!
The cops can, and often have, shot someone for waving a gun around, looking like he might shoot someone with it, or even looking like he was about to pull a hidden one out. Sure as hell they don't have to wait until a bullet is actually coming in their direction. And, like Bush will have to, the cops involved will face a lot of questions afterwards, and maybe loss of their jobs.
Maybe this is carrying the analogy too far.