The Republican National Convention is set to kick off as the nation reels from another deadly shooting and dissident delegates stage a longshot, last-gasp effort to deny Donald Trump the GOP nomination for president.
Amid the tumult, it was undeniably Trump's moment — a week at the pinnacle of American politics that few could have imagined when the New York billionaire entered the race a year ago.
"We want America to understand who Donald Trump the man is, not just Donald Trump the candidate," said campaign chairman Paul Manafort.
Yet the first act Monday was likely to underline how divisive Trump has been. Delegates were voting on the rules that will govern the convention week, and insurgent delegates said they would try to force a state-by-state vote — a move that could disrupt floor proceedings even if they fail.
Trump's opponents want to change a rule that requires delegates to vote for the candidate to whom they were committed after state primaries and caucuses. Trump's nomination is essentially automatic under the current rules, because he has far more than the 1,237 delegates required to win.
Some rebellious delegates threatened to walk out if they are thwarted, perhaps on Monday. Should that occur in significant numbers, it could leave television cameras panning across empty seats.
"We won't sit around and coronate a king," said Colorado delegate Kendal Unruh, who like many insurgents has backed vanquished presidential contender Sen. Ted Cruz of Texas.
Trump's campaign dismissed the effort.
"What will happen on the floor, if there's any attempt, is the party and Trump are going to rise against it," Manafort said.
The roll call vote on the nomination was expected Tuesday, with Trump scheduled to close the convention with an acceptance speech late Thursday.
Trump would gain the nomination at a time of crisis and tumult at home and abroad, punctuated Sunday by the deadly shooting of three police officers in Baton Rouge, Louisiana.
Earlier this month, the slaying of a black man in Baton Rouge by white officers led to protests nationwide and heightened concerns about the state of race relations in America. President Barack Obama, responding to the shooting Sunday, noted that the incidents had come just before political conventions that tend to involve "overheated" rhetoric. Obama urged both parties to avoid "careless accusations" intended to score political points.
"Everyone right now, focus on words and actions that can unite this country, rather than divide us further," Obama said.
But Trump, insinuating that Obama held some responsibility, earlier blamed a "lack of leadership" for the Baton Rouge shootings and added on Twitter, "We demand law and order." Democrat Hillary Clinton, meanwhile, echoed Obama's words in a statement urging Americans not to "turn our backs on each other."
Even before the latest violence, Trump's choice of Indiana Gov. Mike Pence as his running mate had been overshadowed by a deadly truck attack in France and an attempted coup in Turkey.
Cleveland hoped it would escape any violence of its own.
Protests are widely expected outside the Quicken Loans Arena, where the city's police chief, Calvin Williams, said Sunday it seemed everyone was arriving to "exercise their First Amendment rights."
The circumstances only add to the attention placed on Trump and his politically incorrect and unscripted campaign, which has successfully tapped into a wave of populist anger across America.
Trump has thrilled supporters with a willingness to hurl insults at Democrats and Republicans alike: "Little Marco" (Rubio) and "Crooked Hillary" among them. Yet his off-the-cuff rhetoric and disorganized campaign have turned off many Republican leaders.
His blunt tone and aggressive approach to immigration and terrorism have done the same with key segments of general election voters: women, blacks and Hispanics, especially.
According to any number of preference polls, Trump heads into the convention as one of the most unpopular major party nominees ever.
All that makes the convention must-see TV.
"He doesn't have natural filters," said New York GOP Chairman Ed Cox. "Let's see about the acceptance speech. ... People don't know exactly what it's going to be."
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Associated Press writers Bill Barrow in Atlanta and Josh Lederman in Cleveland contributed to this report.
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Follow Steve Peoples on Twitter at: http://twitter.com/sppeoples