All kinds of political movements, good and bad, can inspire acts of lawless violence. Rhetoric rooted in violence has long been a widely accepted part of political debate. Americans across the political spectrum routinely call for “revolution,” or say they want to “burn down” the system, or commend a politician for being a “fighter.” Nobody bats an eye, or should, any more than we pause to note that a “campaign” is both a political and a military event.
But President Donald Trump has gone further than most in flirting with political violence. . . .