I think they know Trump will win and fear his vengeance for this action and will try to have him shot dead.
Under the 5th, 6th, and 14th amendments you are presumed INNOCENT, not so with Trump. With Trump, it’s turned on its head, he is presumed GUILTY first!
Lavrentiy Beria would go after the ‘man’ first, then he progressed to create the crime. Just as they did with Trump.

Trump showed you grace, you obey, then grieve...this is how a structured society runs...he could have refused to partake etc. he could have done lots of things but he is showing you what you too must do, follow the rules...and when its wrong, you then grieve.
a great leader takes you not where you WANT to be, but where you NEED to be...trust 45