This current president has the full and complete backing of the Justice Department, the Senate and the Supreme Court. The concept of “laws” or “constitution” is not applicable to this president or his supporters.
Trump could easily send in federal agents to shoot down protesters, or the media.
At this point, Trump could order the Air Force to bomb major American cities, and this is what would happen. If anyone refused his orders, they would be arrested, and he’d go down the chain until someone (supporter) obeyed.