Worshippers toss hats and a shirt into the air as Pope Francis leaves at the end of his weekly general audience in St. Peter's Square at the Vatican on Wednesday, May 13, 2015.
A boy plays with balls during a sandstorm in Kashgar city in northwestern China's Xinjiang Uighur Autonomous Region on Sunday, May 10, 2015.
A plume of smoke rises after an airstrike by the U.S.-led coalition against Islamic State group positions in an eastern neighborhood of Ramadi, Iraq, the capital of Anbar province, 70 miles (115 kilometers) west of Baghdad.
Demonstrators run from tear gas launched by police during the second day of protests in Apacheta, Bolivia, on the outskirts of El Alto, on Tuesday, May 12, 2015. The protest was called by farmers' leaders and residents of Viacha to demand better road connections from the government.
Guests attend a garden party at Buckingham Palace in central London on Tuesday, May 12, 2015. Every summer, Queen Elizabeth II hosts at least three such parties at Buckingham Palace and are attended by people from all walks of life. Garden parties have been held at the palace since the 1860s, when Queen Victoria instituted what were known as "breakfasts," though they took place in the afternoon.
Jean Claude Niyonzima, a suspected member of the ruling party's Imbonerakure youth militia, pleads with soldiers to protect him from a mob of demonstrators after he emerged from hiding in a sewer in the Cibitoke district of Bujumbura, Burundi on Thursday May 7, 2015. Niyonzima said he fled from his house into a sewer under a hail of stones thrown by a mob protesting against President Pierre Nkurunziza's decision to seek a third term in office.
The car driven by Helio Castroneves, of Brazil, is airborne after hitting a wall in the first turn during practice for the Indianapolis 500 auto race at Indianapolis Motor Speedway in Indianapolis on Wednesday, May 13, 2015. The car landed upside down before rolling onto its wheels but Castroneves was not seriously hurt.