People protest against Republican presidential nominee Donald Trump and the GOP in front of Trump Tower in Manhattan, New York City, U.S., October 18, 2016. Photo by Brendan McDermind.

Clowns get ready for the annual picture part of the XXI Convention of Clowns, at the Monument to the Revolution, in Mexico City, Mexico, October 19, 2016. Photo by Carlos Jasso.

Models present creations by Russian designer Viktoria Andreyanova at the Moscow Fashion Week in Moscow, Russia, October 19, 2016. Photo by Sergei Karpukhin.

Democratic U.S. presidential nominee Hillary Clinton walks onstage for the third and final 2016 presidential campaign debate with Republican U.S. presidential nominee Donald Trump at UNLV in Las Vegas, Nevada, U.S., October 19, 2016. Photo by Lucy Nicholson.

Republican U.S. presidential nominee Donald Trump speaks as Democratic nominee Hillary Clinton listen during their third and final 2016 presidential campaign debate at UNLV in Las Vegas, Nevada, U.S., October 19, 2016. Photo by Rick Wilking.

Republican U.S. presidential nominee Donald Trump listens to Democratic U.S. presidential nominee Hillary Clinton during their third and final 2016 presidential campaign debate at UNLV in Las Vegas, Nevada, U.S., October 19, 2016. Photo by POOL New.

Bird watchers view huge flocks of wading and sea birds flying over the coastline as seasonal high tides force them off their feeding grounds and to move closer to shore near Snettisham in Norfolk, Britain, October 20, 2016. Photo by Toby Melville.

Migrants are seen during rescue operation in the Mediterranea Sea, October 20, 2016. Photo by Handout.

A general view taken with a drone shows a mosque where forces loyal to Syria’s President Bashar al-Assad are stationed in Aleppo’s government-controlled area of al-Masharqa, Syria, October 20, 2016. Photo by Abdalrhman Ismail.

U.S. President Barack Obama shakes hands with a girl being held above the crowd during a Clinton-Kaine campaign rally at Florida Memorial University in Miami, October 20, 2016. Photo by Kevin Lamarque.

Iraqis who fled violence in Mosul gather as they reach Syria, near the Iraqi border, in Hasaka Governorate, October 20, 2016. Photo by Rodi Said.

The White House is lighted in pink in support of breast cancer awareness month in Washington, U.S., October 20, 2016. Photo by Yuri Gripas.

U.S. actor and UN Messenger of Peace Leonardo DiCaprio poses during arrivals for a screening of his documentary film «Before the Flood» at the United Nations in New York City, U.S., October 20, 2016. Photo by Brendan McDermid.

A man washes his horse as a woman bathes her son at concrete water pens under a flyover in a slum area in Kolkata, India, October 21, 2016. Photo by Rupak De Chowdhuri.

Civilians return to their village after it was liberated from Islamic State militants, south of Mosul, Iraq, October 21, 2016. Photo Thaier Al-Sudani.