Shoot every one of them. Put them up against the wall.
Nah I'm joking.
No need to damage a perfectly-good wall.
Seriously, you've got to make examples. Violence is, sadly, going to happen no matter what Biden does, so why not at least make sure you send a message before it all kicks off? If nobody was imprisoned at all, RepublicNazis would sneer at the weakness of Dem Bones and just wait for their chance for revenge. If people got stiff, proper sentences and those who refused to co-operate from the Trump camp were immediately arrested, assets seized, remanded etc RepublicNazis would sneer at the weakness of Dem Bones and just wait for their chance for revenge.
So, you know, hung for a sheep and all that. You send nothing more than a message of weakness by being lenient on the people who tried to overthrow American democracy (sic) and set yourself up for ridicule and the loss of the vote of those who thought they could depend on you to punish the wrongdoers. How do you think the other side would have approached this? Did someone say Gitmo?
Don't think America avoids virtual civil war by bowing down and being afraid to do what's right. At the moment, the rioters are standing there with their arms folded and a defiant look on their troglodyte faces saying "Yeah? What are you going to do about it?" Current answer: shrug and not much really. Promise not to do it again? No. What are you going to do about it? Shrug, um, not much...