This guy also had an extensive criminal record which also prevented him from buying a firearm. Also to know is criminals do not follow gun laws and do not care about them. Stepping back and thought again after I've heard all of this was caused by a police stop, I've concluded that this was not domestic terror nor "white supremacy". Ator's motive is purely criminal he probably had a warrant out for his arrest and did not wanted to go back to prison and he also wanted to kill a few people including a DPS trooper by going out guns blazing.