It's important for the rightwing to realize that the liberal outrage over Trump is unprecedented
Baloney. Liberals are always obsessed with hating someone. Whether it's Buuush or Reagan Or John Bolton or Newt or, now, Trump, they just hate whoever is handiest. Nothing particularly "unprecedented" about it. If the person has had a hand in proving the liberals are miserable failures (which happens frequently), their hate might be a little more violent, but not materially different.
They have to hate. It's all a lot easier than actually evaluating the actual results of their policies, and comparing them to the results of conservative policies, and finding out that they have failed nearly every moment of their political lives. Examining the truth honestly is unbearable to these people, so they hate instead.
If liberals couldn't hate someone, they'd melt into a puddle of brown sugar and vanish, like the Wicked Witch.
Liberals have never been ignored this completely.
They threw everything they had at Trump, outspent him 3-to-1 in the campaign, got massive advantage is favorable news coverage nationwide, and they still lost.
To make matters worse, then they published their usual lies about Trump and other Republicans, this time Trump simply pointed out how dishonest and disingenuous they were, and people believed Trump and voted him into office.
That scares leftists like nothing else could. They see themselves losing the entire structure of fibs and lies they have always weaved, both about themselves and about their opponents, they whole thing crashing down around them.
They have no idea how to fight this. Probably because there is no way. Once you blow your credibility with as many lies as the liberals have, there really isn't any road back. They'll have to start all over again, lying to people who aren't even born yet, to eventually build a new constituency.