Civility ended when Trump incited an Insurrection at the Capitol over total lies and most republicans can't admit it was an insurrection or even admit Trump lost the election.
At some point Republicans need to take the first step and admit they lost the election and Trump is lying about fraud, like Kinzinger, Liz Cheney, and Chris Christie have done. (anybody that admits this gets booted out of the GOP)
On top of that Trump mocked a handicap reporter, called nazi's fine people, and did a whole bunch of other reprehensible things, and he committed numerous serious crimes post election. The republicans need to change their way before peace can be made.
(Add in the fact that GW Bush destroyed America and the balanced budget and how do you expect me to respect the republicans in anyway?)