Consider the scene from The Godfather Part Two where Michael and Tom are discussing whether to assassinate their rival Hyman Roth, who is about to return to the US and immediately be taken into custody, meaning Michael has won and Hyman has lost.
Tom: Do you have to wipe out everybody?
Michael: I don't feel I have to wipe everybody out, Tom. Just my enemies. That's all.
The Democrats and their useful idiots in the GOPe see Trump as their Hyman Roth.
And by continuing to have DC “occupied” until after this show trial, they have probably already determined that Trump will be “convicted” (of what and how, who knows). And with this “conviction”, they hope that we get angry and demonstrate. Should we demonstrate? Asking for a friend...