American Thinker provides background and some possible motivations to the Colorado Springs shooter. Nothing sounds like a guy who lives for politics.
From what I have found so far, Dear looks like a pretty sad figure, the not quite right in the head child who never grew up. He apparently never got along all that well with people even before he dropped out to live off the grid. I have to wonder if his parents never stopped contributing to his upkeep and that when senior was alive junior was kept on a short enough leash to seem respectable.