The meeting of the world’s top leaders and diplomats, scheduled to begin on Tuesday, will bring street closures, thousands of police officers and hundreds of protesters to midtown Manhattan, an area already plagued with gridlock on an average weekday.
“It’s the equivalent of the Super Bowl of security,” said J. Peter Donald, a spokesman for the New York City Police Department.
Trump will be on hand on Monday and Tuesday, when he will address the body of world leaders for the first time. It was not immediately clear whether he would stay at his Manhattan penthouse about a mile away from United Nations headquarters or sleep at his golf course in Bedminster, New Jersey.
The event also comes just days after a homemade bomb on a packed commuter train in London injured 22 people, though it failed to fully explode.
A handful of anti-Trump protests in New York have been scheduled, with more sure to come. A march on Monday to combat “white supremacy” will start from Grand Central Terminal, while the left-wing activist group Code Pink has organised a Tuesday march to the U.N. to protest Trump and Israeli Prime Minister Benjamin Netanyahu.
Other protesters will gather outside the U.N. to call out specific countries, including a rally against Iran President Hassan Rouhani.