Mara Salvatrucha (MS) gang members show off their weapons in the Las Victorias district of San Salvador. In March 2012, the two largest gangs in El Salvador - the Mara Salvatrucha (MS) and the Barrio 18 (M18) - agreed on a truce following secret negotiations between gang leaders in prison which were mediated by a bishop and a former rebel leader. It is unclear whether the decision was the idea of the gangs themselves or whether they were encouraged by the government. (Photo by Adam Hinton)

A view of an installation as part of the “S.A.C.R.E.D” exhibition by Chinese artist Ai Weiwei during the 55th La Biennale of Venice, in the church of Sant'Antonin in Venice May 28, 2013. (Photo by Stefano Rellandini/Reuters)

In this Wednesday, September 17, 2014 photo, the sun shines over a field of sunflowers in Walkill, N.Y. (Photo by John DeSanto/AP Photo/Times Herlad-Record)

An Iraqi man comforts his 4-year-old son at a regroupment center for POWs of the 101st Airborne Division near An Najaf, Iraq, March 31, 2003. The man was seized in An Najaf with his son and the U.S. military did not want to separate them. (Photo by Jean-Marc Bouju/Associated Press)

An assault at 125th Street and Dr. Martin Luther King Jr. Boulevard in Harlem, after a basketball game on August 9, 2020. Police vehicles responded but no officers intervened. (Photo by G.N.Miller/The New York Post)

A British Spitfire and an American P-51 Mustang from Ultimate Warbird Flights take to the Northamptonshire on August 14, 2020 skies to mark the 75th anniversary of VJ Day. (Photo by Richard Pohle/The Times)

Police officers detain a FEMEN naked activist during an action at the Poland embassy in Kiev on October 26, 2020 in support of Polish women in their right to abortion. (Photo by Sergei Supinsky/AFP Photo)

Lancaster Gate station displays signage after being rebranded “Ratchet and Clankaster Gate” as the PS5 goes on sale in the UK, on November 19, 2020 in London, England. The first generational upgrade to Sony's line of Playstation consoles since 2013, the launch has seen pre-orders sell out within hours and websites crash as retailers attempt to keep up with demand. (Photo by Alex Davidson/Getty Images)