The answer is quite easy. He defeated Hillary Clinton. She was to be the first woman president who also had strong left-leaning credentials.
That’s the one — but there’s more. He defeated Hillary Clinton IN SPITE of the massive cheating they knew 100% that would work. And it didn’t.
We have a winner. He defeated the appointed one. Jeb was supposed to win and then graciously accept defeat in the general with a promise he’d be next in 8 years. Trump blew that up. And then when he had the audacity to actually win the general, that was a bridge too far.
But it was also how he won. He pulled life long union democrats, blacks and Hispanics away from the Democrat plantation by opening their eyes to who the democrats really were and how little they had done to benefit any of these groups. The old talk is cheap, deeds are precious argument that Ross Perot tried unsuccessfully to make. That enraged the DS. They couldn’t allow people to actually think for themselves. Their power rests on the need for people to do what they are told. Trump asked people the famous “What do you have to lose” question, and the people listened. This couldn’t be allowed so they attacked him, were uncooperative and ultimately cheated to get rid of him when everything else failed.
The FFs wouldn’t even recognize the country they created. It’s not a monarchy, but it is ruled by a privileged ruling class. And that class is not going to give up power easily. Trump was a threat to that power and so he had to be destroyed. I’m surprised someone didn’t take a shot at him before now. Maybe if the cheating had failed that would have been the next step.