and yet these bozos were radical leftists, and nothing you spin about will change that fact.
Look at it this way, the only thing separating these guys and guys like McVeigh is their end of the ideology. Your premise that no one on the left has violent tendencies is absurd in the extreme.
Let me say it this way. People on the left that have the ideology "of the left" are not killers. People that are killers may adopt a cause, like Occupy Wall Street but they are not true believers or they would not attempt to blow people up. In the same way a real christian would not put a bullet into a Doctors head, because the doctor is listed as an abortion doctor. A real Christian would pray for God to change the doctors heart, that is their ideology, not using bullets.
But those on the violent right truly believe, that one day they will need to kill fellow American's for god and country, it is a part of the ideology, Guns, Gun licenses, trucks full of fertilizer, hidden Militia's. They are not much different than members of the old KKK. The violence is part of their ideology.