Virginia gun store owner death threats

I saw in Larry King live last night that the guy that runs the gun store where that Korean student purchased a gun has had to close his web site due to all the death threats he has received. These gun-control advocates (let's be polite) are presumably anti-violence, so what's with all the hostility? The store owner was acting entirely within the law and couldn't have foreseen that his customer was a homicidal lunatic about to embark on a record-breaking shooting spree. I just don't understand the attitude of some people these days. Free speech and concealed carry are virtually the only remaining guarantees of freedom left in the US in 2007. The police and the government (plus the gun-control nuts) only ever seem to restrict the rights of the law-abiding. Crooks don't obey the law, I'm afraid.