good catch from david:

a letter to the editor (Re "The Don't-Bother-to-Knock Rule," editorial, June 16) which has a intriguing and thought-provoking comment on the problems inherent with the conflicting conservative arguments:

"Two conservative legal doctrines are on a collision course. The Supreme Court in effect held that if the police have a warrant, they may enter your house without knocking or announcing their presence. But recently, 11 states have passed National Rifle Association-backed bills that say that if an unknown person comes crashing through your door, you have the right to shoot first and ask questions later. So, of course, one of these days someone's going to shoot a cop and offer the latter law as a defense. This strikes me as a set of laws that can't help but clash, and often."