For Biden, How to Cool the Temperature Without Freezing His Campaign

For months, the message from the White House and Wilmington was as stark as it was simple: This year’s election amounts to an existential choice between a defender of democracy and a destroyer of democracy. Nothing less than the future of America is at stake.

And then the bullets started flying.

The assassination attempt over the weekend has complicated President Biden’s argument now that former President Donald J. Trump has gone from being a longtime instigator of political violence to a victim of it. Republicans, including Mr. Trump’s newly anointed running mate, Senator J.D. Vance of Ohio, instantly blamed Mr. Biden, citing his sharp rhetoric.

No one in Mr. Biden’s camp thinks that is a good-faith argument, especially from allies of a former president who sent the mob that marauded the Capitol on Jan. 6, 2021, and did nothing to stop its assault, and has now vowed to pardon rioters convicted of violent crimes. But the images of Mr. Trump with blood streaked across his face after being grazed by a would-be assassin’s bullet raise the question of how far language should go in a heated campaign.

Mr. Biden, who has long preached unity and civility, conceded on Monday that it was “a mistake” to tell supporters a week ago that he wanted to “put Trump in a bull’s-eye,” an expression that was certainly metaphorical but opened the president to criticism after his opponent found himself in literal cross hairs. At the same time, Mr. Biden and his team have made clear that they will not back off efforts to demonstrate that Mr. Trump is a budding dictator who is dangerous to the country.

“How do you talk about the threat to democracy, which is real, when a president says things like he says?” Mr. Biden asked Lester Holt of NBC News on