A crowd in Buffalo chimed in to sing the Canadian national anthem before an N.H.L. playoff game. That presented a contrast to ongoing U.S.-Canada tensions.

After attending a ceremony at the memorial in Lower Manhattan, the royal couple is scheduled to visit a Harlem nonprofit, the New York Public Library’s main branch and Christie’s.

Mr. Rai documented major figures like the Dalai Lama and Indira Gandhi, as well as the victims of a poison gas leak in the city of Bhopal.

The United States has carried out dozens of boat strikes since September against people the Trump administration accuses of smuggling drugs.