President Trump has defied political conventions, challenged norms and upended traditions since he first rode down a gilded escalator at Trump Tower in mid-2015 and launched his improbable march to the White House.
On Sunday, he crossed another line: retweeting a doctored video from someone whose Twitter handle can't be repeated in a family newspaper, showing Trump striking Hillary Clinton in the back with a golf ball and knocking her down.
The reaction was predictable. Critics were outraged. Supporters were gleeful. And social media lit up like a Christmas tree.
Perhaps the morning broadside was just Trump’s way of hitting back, a reminder of his pugilistic instincts honed by the raucous ethos of reality TV. In recent days, Clinton has called him a “clear and present danger” to American democracy, and noted that she won 2.9 million more votes than he did on election day, as she touts her memoir of the 2016 election, “What Happened.”