Trump, like his passionate supporters, are victims of the workings of the human ego. The primary function of one’s ego is to maintain personality and belief, no matter what. It is a personal defense mechanism that hates change of any kind. Once it has decided an issue, it defends its decision sometimes even unto death.
Only those with an advanced intellect can rise above the obstinacy of the ego. Ego is the mother of blind faith — the truth believer.