Caller Theory was on Rush that he is a Leftist that did this to discredit Trump. Says in manifesto that he does not like Trump...............
He claimed to be a socialist, hated conservatives.
His goal was to motivate leftists to further restrict 2nd amendment rights...sounds a lot like the Vegas shooter.
....... I'm pretty sure he only mentioned Trump once by name in the manifesto and it sounds like he was praising him not chastising him calling Trump ".... a symbol of renewed white identity and common purpose".