The on-camera manner and seemingly balanced personality of anti-heath care protester William Kostric, who stood outside President Obama‘s town-hall meeting yesterday with a gun strapped to his leg, isn’t all that crazy-seeming. As right-wing extremists go, I’d rather listen to him than mouth-foamers like Glenn Beck or Rush Limbaugh. But for every Kostric out there, there are probably nine others who are more rabid and wild-eyed and hair-trigger. If it were only possible to just clap our hands three times and get rid of these guys, painlessly and untraumatically…