He's trying to create street protests against him. BLM 2.0. Hoping there is violence that needs quelling. He can't call in the National Guard; state governors can; some fanatic supporters of his will. Then he'll hope to use the emergency powers under the continuity plan (i.e. powers put in place in case of things like nuclear war, last invoked after 9/11) to cement control and, I'd assume, attempt to use that as pretext to stay in the job, or hope that more Americans clamor for him to do so. Worst case, he can simply claim this is all an unfair railroading, and that the liberal courts were against him.
He's hopelessly finished, same as Nixon was. But Nixon had both a conscience and members of his staff and Republican leaders willing to move (vote) against him continuing on. Trump has only sycophants, enablers, cowards and traitors to American democracy.