Conservatives and a "progressive POTUS" have crossed that line before in America; maybe that's what Trump means by MAGA?
Free Speech During Wartime.
"Congress passed an amendment to the Espionage Act — called the
Sedition Act of 1918 — which further infringed on First Amendment freedoms. The law prohibited:
"Uttering, printing, writing, or publishing any disloyal, profane, scurrilous, or abusive language intended to cause contempt, scorn … as regards the form of government of the United States or Constitution, or the flag or the uniform of the Army or Navy … urging any curtailment of the war with intent to hinder its prosecution; advocating, teaching, defending, or acts supporting or favoring the cause of any country at war with the United States, or opposing the cause of the United States."