From PRO-TRUMP PROTESTERS STORM CAPITOL, HALTING VOTE CERTIFICATION:

Protesters loyal to President Trump stormed the Capitol on Wednesday, halting Congress’s counting of the electoral votes to confirm President-elect Joseph R. Biden Jr.’s victory as the police evacuated lawmakers from the building.

Here is the sequence of events: President Trump holds a rally for his most ardent supporters in Washington D.C. and encourages them to go to the Capitol to interfere with the normal function of government. Immediately thereafter, hundreds of those same supporters storm the Capitol building in an attempt to prevent the formalization of a transition of power.

In effect, the president has used his followers in a direct attempt to remain illegitimately in power by force. The term we have for this sort of thing is: an attempted coup. I don’t see how a serious observer of these events could conclude that the actions of President Trump and these supporters constitute anything less than treason.