Youths practice their Parkour skills near a mural said to have been painted by British street artist Banksy in conflict-ravaged Beit Hanoun. (Mohammed Abed / AFP/Getty Images)
A woman walks past “The Death of Euro†by street artist Goin in Athens on Feb. 20 2015 as Germany and Greece were set to face off in a meeting in search of a last-minute bailout compromise. (Louisa Gouliamaki / AFP/Getty Images)
A mural by an unidentified artist in Manila. Jan. 26, 2015. (Noel Celis / AFP/Getty Images)
A mural by Colombian artist Bastardilla in Mexico City. The piece is his statement on the 43 university students who went missing in Iguala last year. March 4, 2015. (Rebecca Blackwell / Associated Press)
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A woman walks past a mural of children using an Israeli army watch tower as a swing ride, said to have been painted in Beit Hanoun by British street artist Banksy. Feb. 26, 2015. (Mohammed Abed / AFP/Getty Images)
Peruvian artist Carlos Atoche works on his untitled mural along the wall of an abandoned Italian air force barracks in Rome. Feb. 25, 2015. (Gregorio Borgia / Associated Press)
A mural in Cairo by an unknown artist. It depicts soccer fans who were killed following a match. Feb. 9, 2012. (Nasser Nasser / Associated Press)
A mural of a crying child who is served a soccer ball to appease his hunger. It was created in Sao Paulo by Brazilian street artist Paulo Ito as a statement about the money spent hosting the 2014 World Cup. June 5, 2014 (Miguel Tovar / Getty Images)
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A child walks near a mural of a crying figure, said to have been painted by British street artist Banksy. The door stands in rubble left by the 2014 conflict between Israel and Hamas. Feb. 28, 2015. (Mohammed Saber / EPA)
A mural at the West Hollywood Library by artist Kenny Scharf. Sept. 28, 2011. (Genaro Molina / Los Angeles Times)
