Riot police face off with demonstrators at the “Occupy Denver” camp on October 29, 2011 in Denver, Colorado. Following a march by protesters, police moved in on their encampment to tear down recently erected tents. They arrested numerous protesters, pepper-sprayed others and others reportedly fired rubber bullets at the crowd during the confrontation. (Photo by John Moore/Getty Images)

A Syrian boy plays with the head of a sacrificed sheep at a DIP camp for Interally Displaced Persons near the town of Aqrabat in Syria's northern Idlib province on August 12, 2019. Known as the “big” festival, Eid Al-Adha is celebrated each year by Muslims sacrificing various animals according to religious traditions, including cows, camels, goats and sheep. The festival marks the end of the Hajj pilgrimage to Mecca and commemorates Prophet Abraham's readiness to sacrifice his son to show obedience to God. (Photo by Aaref Watad/AFP Photo)

French aircrafts of the Patrouille de France spray colored smoke during a performance on the opening day of the Dubai Airshow in Dubai, United Arab Emirates, Sunday, November 17, 2019. (Photo by Kamran Jebreili/AP Photo)

Protesters hold on to each other as they are sprayed with water from police water cannons in Martyr square, downtown Beirut, Lebanon October 8, 2015. Lebanese security forces fired tear gas and water cannons to break up an anti-government protest in Beirut on Thursday, and the country's fractious leaders postponed talks aimed at resolving a political crisis that is feeding public discontent. (Photo by Aziz Taher/Reuters)

Belarussian rhythmic gymnast Melitina Staniouta takes a selfie as she has her make-up done in Minsk, May 29, 2016. Photos show her training and competing, as well as trying on her official Olympic uniform and getting ready for a photo shoot. (Photo by Vasily Fedosenko/Reuters)

A surfer dressed as Santa gets to his feet as he braves the cold seas and near flat waves during the annual Surfing Santa as part of the Santa Run and Surf 2016 at Fistral Beach in Newquay on December 4, 2016 in Cornwall, England. Now in its third year, the santa surf and fun run is organised by Fistral Surf Center and Cornwall Hospice Care and raises funds for local charities. (Photo by Matt Cardy/Getty Images)

An attendee takes a selfie at KCON USA, billed as the world's largest Korean culture convention and music festival, in Los Angeles, California on August 11, 2018. K-pop acts sing or rap in Korean, often with snippets of English. On the Web, where K-pop fandom thrives, many music videos include subtitles. (Photo by Mike Blake/Reuters)

The HFR x LeBron 16 shoe is unveiled at the Harlem Fashion Row show and awards ceremony before the start of New York Fashion Week, Tuesday, September 4, 2018. (Photo by Diane Bondareff/AP Photo)