Coup: a sudden, violent, and illegal seizure of power from a government.
“Our country has had enough. We will not take it anymore and that’s what this is all about. To use a favorite term that all of you people really came up with, we will stop the steal.” — Donald Trump
There was no steal. Barr himself said it. This was Trump’s attempt to stay in power despite the choice of the electorate.
He told his followers that “we won’t have a country” if they didn’t stop the vote in Congress. They acted according to his wishes.