Why go after them? The politicians are the real problem, and they can't set up 1000 yard, or even 300 yard, security cordons around *all* of them, or even most of them *all the time*. See "Enemies, Foreign and Domestic" by Freeper Travis McGee (Matthew Bracken). (Who should be along shortly to post his picture of "Cletus Longarm".)
She pointed out how legislators (who are really responsible for the myriad laws we suffer under) are relatively inaccessible. It might be possible for an unhappy citizen to pick off one of them from time to time, but their soldiers who enforce those laws-- the police-- are a lot easier to hit.
I'm fairly unsophisticated when it comes to html, so you'll have to cut and past this:
www.lizmichael.com/mcveigh.htm
Don't let the title put you off; read the whole thing. It's worth it.