Somehow disruption doesn’t begin to cover it. Upheaval might be closer. Revolution maybe. In less than two weeks since being elected again, Donald J. Trump has embarked on a new campaign to shatter the institutions of Washington as no incoming president has in his lifetime.

He has rolled a giant grenade into the middle of the nation’s capital and watched with mischievous glee to see who runs away and who throws themselves on it. Suffice it to say, so far there have been more of the former than the latter. Mr. Trump has said that “real power” is the ability to engender fear, and he seems to have achieved that.

Mr. Trump’s early transition moves amount to a generational stress test for the system. If Republicans bow to his demand to recess the Senate so that he can install appointees without confirmation, it would rewrite the balance of power established by the founders more than two centuries ago. And if he gets his way on selections for some of the most important posts in government, he would put in place loyalists intent on blowing up the very departments they would lead.

He has chosen a bomb-throwing backbench congressman who has spent his career attacking fellow Republicans and fending off sex-and-drugs allegations to run the same Justice Department that investigated him, though it did not charge him, on suspicion of trafficking underage girls. He has chosen a conspiracy theorist with no medical training who disparages the foundations of conventional health care to run the Department of Health and Human Services.

He has chosen a weekend morning television host with a history of defending convicted war criminals while sporting a Christian Crusader tattoo that has been adopted as a symbol by the far right to run the most powerful armed forces in the history of the world. He has chosen a former congresswoman who has defended Middle East dictators and echoed positions favored by Russia to oversee the nation’s intelligence agencies.