I have a 3 yr old grandson who displays some of the #narcissistic #self-centered behaviour consistent with that age group. He's growing out of it.
Looking at Trump's bio, it appears he's stayed #oppositional, #defiant, #obnoxious and incapable of empathy his whole life.
At some point, I would guess #narcissists become full blown #sociopaths.
This describes not only #Trump, but a huge swath of his base, and quite a few #Republican politicians as well.