The funny thing is, I read somewhere that he was actually politically conservative, and a fan of Patrick Buchanan (this all happened back in 1992). This didn't stop him from being a faithful JBT.
Horiuchi should not be forgotten. However, at the end of the day, he was simply the guy who pulled the trigger. Equally or more guilty, in my view, are the men who issued the order that any armed adult in the Weaver compound should be taken out, regardless of whether they were posing any threat to anybody. This was essentially an unconstitutional execution order. These men were Larry Potts (from FBI headquarters) and Richard Rogers, the commander of the Hostage Rescue Team. These men have never received any substantial punishment for their participation in murder.