Yes, that's the thing, the shooter attacked for whatever reason, but its the atmosphere that radio and tv pundits and some political figures have started that helps to create the situation - giving people the idea that violence changes the political system - there is no discourse any more, just ranting, which means, you've just run out of ideas.

Someone did make a comment I thought was apt, this shooter probably had mental problems that could not be addressed because he couldn't afford health care.