Sociologists love when people get shot; it gives them a chance to make correlation/causation arrows go in all kinds of crazy directions.

So when people jumped on the gun rage by Jared Loughner as a product of the Tea Party or a climate of hate or whatever they wanted to call it, they easily found someone in sociology to back them up on it.   

It must be extremism or something else that he got from listening to Rush Limbaugh or watching Fox News, right?   Unless it is just some crazy guy shooting people.    Mapping events to a cultural topology or a social agenda is not science - not even social science - it is plain old superstition.

On U.S. morning television show "Good Morning America", they interviewed Loughner's friend Zach Osler:
He did not watch TV. He disliked the news. He didn’t listen to political radio. He didn’t take sides. He wasn’t on the left. He wasn’t on the right.
He was just nuts.   There is no hidden subtext to it.   No social engineering that can cure it.   But look for a subset of Congress who has long desired to squash rightwing talk radio by mandating leftwing radio no one will want to listen to to renew efforts for a 'fairness doctrine' that is anything but fair.