“Make America Great Again” is the slogan of the old white “Christian” men that comprise the bulk of the Republican Party. They are angry that society will no longer allow them to dominate women and minorities the way men used to in the ‘20s, and ‘30s, and ‘40s. That's why the more cruelty Trump shows to women and minorities, and the more he cozies up to dictators, the more Republicans love him.
There are three things that determined why people voted for Trump:
1. You were already Republican so you’d vote for any Republican.
2. You want lower taxes because you’re affluent.
3. Or, you have demographic panic and resentment toward women and non-whites.
That is what elected Trump. Trump didn't brainwash them. He just told them what they wanted to hear. That is what explains the Republican War on Women and their War on Immigrants, homosexuals and transgenders, and people of color. It also explains the behavior of the righties right here on this board. Trump is a symptom, not a cause.