Remember back when Harry Reid 'went nuclear' in the Democrat-controlled Senate, deciding to end filibusters to bypass the Republicans? Everyone knows how that ultimately played out: Democrats used the power, then lost it, and for a while now a Republican-controlled Senate has been using it to great effect.
Cocaine Mitch McConnell himself has poked his head out of his shell to say - I told you this would happen, guys. And that was probably a sincere warning: conservatives, being cuckservatives, probably would have been so chastened by reluctance by Reid to 'go nuclear' that they'd have had trouble doing so themselves later on. But there was no such reluctance, and since then, McConnell - and the GOP - have pushed things further.
People don't really talk about 'bipartisanship' anymore (it was always a Uniparty ruse anyway), and chances are they buried the concept with McCain's corpse. Assuming they finally put that guy in the ground.
The point is: the left tends to forget that the tactics they tolerate today are the tactics the right uses tomorrow. And tomorrow's coming faster than it ever did, thanks to the internet.
Think of all the opposition to Trump. The open advocacy of resisting him in every way. Of trying to get him ousted. Of threatening any of his allies with punishment for daring to support him. Lawsuit after lawsuit to prevent - if only via nuisance - a law from being enacted. Outright decisions to declare some cities and even states 'sanctuaries' against federal law. Really, against laws they simply don't like.
If you don't think that's coming home to roost, prepare to be surprised.
Eventually, a leftist is going to win an election, and the right's not just going to complain - they're going to say the leftist's election is illegitimate, and their orders carry no weight. The leftists will pass laws, and the right won't enforce them. Indeed, the right will blatantly refuse. I don't know the law, I don't know the limit. But eventually it's going to happen.
This country will not last.