24 Of The Most Powerful Photos Of This Week

President Donald Trump and first lady Melania Trump observe a moment of silence for the Sept. 11 terrorist attacks on the South Lawn of the White House on Monday.

The "Tribute in Light" memorial, as seen from New Jersey on Sept. 10.

Floodwaters from Hurricane Irma recede on Sept. 13 in Middleburg, Florida. Flooding from Black Creek surpassed the town's previous high-water mark by roughly seven feet.

A sign posted on a private property in Islamorada, Florida, on Sept. 13.

Residents observe the damage left by Hurricane Irma on Sept. 11, in Philipsburg, St. Maarten.

Soldiers stand guard a few meters from the Sensacion hotel in Matías Romero, Oaxaca, which collapsed from the powerful earthquake that struck Mexico, on Sept. 8.

An altar to the Virgin of Guadalupe is covered with fallen debris inside a damaged home in Juchitán de Zaragoza, Oaxaca, in Mexico.

A Border Patrol vehicle drives in front of a mural at a border structure near Tecate, Mexico, on Sept. 8. A French artist who aims to prompt discussions about immigration affixed a 65-foot-tall cutout photo of a Mexican boy to scaffolding built in Mexico. The image overlooks a section of wall on the California border and will be there for a month.

Fans unfurl a protest sign during a game between the Boston Red Sox and the Oakland Athletics at Fenway Park in Boston on Sept. 13.

Rohingya refugees arrive on a boat to Shah Porir Dip, Bangladesh, on Sept. 14. Around 370,000 Rohingya people have fled Myanmar since late August during the outbreak of violence in the Rakhine state.

Smoke rises from buildings near Bughayliyah, Syria, on Sept. 13, as Syrian forces advance during their ongoing battle against ISIS.

An injured woman after a bombing incident at Parsons Green underground station in London, on Sept. 15.

Riot police detain protesters during the trial of two Turkish teachers, who went on a hunger strike over their dismissal under a government decree following last year's failed coup, outside a courthouse in Ankara, Turkey, on Sept. 14.

Rohingya Muslims, who recently crossed over from Myanmar into Bangladesh, beat and kick a man suspected to be a child kidnapper near Balukhali refugee camp, Bangladesh, on Sept. 15.

Drops of blood stain Pope Francis's white cassock after he knocked his head on the popemobile in Cartagena, Colombia, on Sept. 10.

A correfoc performance during a Catalan pro-independence demonstration on Sept. 10, in Vilafranca del Penedès, Catalonia, in Spain.

A runner races through mud during the Muddy Trials race at the Craufurdland estate in Ayrshire, Scotland.

Sloane Stephens celebrates winning the US Open and kisses the trophy following the women's singles final in the Arthur Ashe Stadium in New York City on Sept. 9.

Apple CEO Tim Cook speaks during a product announcement at the Steve Jobs Theater on the Apple Park campus in Cupertino, California, on Sept. 12.

Frank Giaccio, 11, is encouraged by President Donald Trump as he mows the lawn of the White House's Rose Garden in Washington, DC, on Sept. 15.

Former Democratic presidential nominee Hillary Clinton attends a signing of her new book What Happened at a bookstore in Manhattan's Union Square, on Sept. 12.

Demonstrators take part in a same-sex marriage rally in Sydney on Sept. 10.

Flight director Julie Webster reacts to the confirmation that the Cassini spacecraft had disintegrated in the skies above Saturn, at NASA's Jet Propulsion Laboratory in Pasadena, California, on Sept. 15.

The aurora borealis is seen over the sky near the village of Pallas, Finland, on Sept. 8.