So, far right parents in a conservative religion in a Republican town in a Republican state produced a child so tortured by a culture of hate and violence that as soon as they even start to lean either way their instinct is murder. Breaking the cycle of hate is relatively easy compared to breaking the cycle of violence. The statements they made to their roommate (even if that heresay is true) just confirm that they were a troubled child from a troubled culture trying to change. It should surprise no one that those childish attempts would be a VERY twisted reflection of the ideal. So no, he was not part of the left. Just a child in pain reacting the only way their conservative upbringing taught them.