A man walks past a graffiti dedicated to the Holocaust in the northern port city of Thessaloniki March 15, 2015. Jews gathered at the northern town of Greece for an event organised by the Thessaloniki Jewish community marking the first deportation of Thessaloniki Jews to Nazi death camps during World War Two. (Photo by Alexandros Avramidis/Reuters)





Shops are shuttered in the Paseo de Diego in San Juan, Puerto Rico, Wednesday, April 17, 2019. This central thoroughfare in Rio Piedras was filled years ago with stores that are closed and empty today. (Photo by Carlos Giusti/AP Photo)





In this October 22, 2005 file photo, people walk past graffiti in Rio de Janeiro, Brazil, a day before a vote to ban the sale of firearms and ammunition to civilians. Backed by the Roman Catholic church and other powerful forces in the country, one poll a month before the referendum put support at 73 percent. The U.S.-based National Rifle Association worked with activists in Brazil to help defeat it. (Photo by Renzo Gostoli/AP Photo/File)





In this November 12, 2018, photo, graffiti by Cuban-American artist Jorge Rodriguez-Gerada depicting a boy is painted on a bullet riddled building on the former frontline of the 1975-1990 Lebanese civil war in downtown Beirut, Lebanon. Nearly 30 years after civil war guns fell silent, dozens of bullet-scarred, shell-pocked buildings are still standing _ testimony to a brutal conflict that raged for 15 years and took the lives of 150,000 people. (Photo by Hassan Ammar/AP Photo)





A boy sits near the Soviet-era Minsk motorcycle at a repurposed cafe named Hidden Gem Cafe which contains recyclable objects in Hanoi, Vietnam on March 12, 2019. (Photo by Reuters/Kham)





Tourists stand in front of a mural depicting the Bloody Sunday events, in Londonderry, Northern Ireland March 14, 2019. (Photo by Clodagh Kilcoyne/Reuters)





In this March 8, 2019 file photo, an independent Afghan artists draws graffiti on a barrier wall of the Ministry of Women's Affairs to mark International Women's Day, in Kabul, Afghanistan. In a Thursday, March 28, 2019 report the Special Inspector General for Afghan Reconstruction, a U.S. watchdog, said that Afghanistan will remain dependent on international donors and foreign help even after a peace deal with the Taliban is reached. The report identified main high-risk areas including threats to women's rights. (Photo by Rahmat Gul/AP Photo)





Maya Tz'utujil women sell fruit in San Juan La Laguna, Guatemala, Tuesday, March 12, 2019. An English tourist whose body was found near a Guatemala highland lake popular with travelers died of hemorrhaging resulting from a traumatic brain injury, according to an autopsy report completed Tuesday. (Photo by Santiago Billy/AP Photo)





In this photo taken Tuesday, Feb. 19, 2019, the charred remains of the "Bird Alley" mural sit in the alley behind Holh Feed & Seed in Bellingham, Wash. The Bellingham Fire Department was called to a two-alarm fire early Monday morning that destroyed the second story and the granary tower of the building. More than 75 animals were rescued from a burning pet supply store. (Lacey Young/The Bellingham Herald via AP)





In this November 27, 2018, photo, a man passes in front of Beit Beirut, the nearly 100 year-old house that served as a sniper position during Lebanon's 1975-1990 civil war, on a former Beirut frontline, Lebanon. Nearly 30 years after civil war guns fell silent, dozens of bullet-scarred, shell-pocked buildings are still standing – testimony to a brutal conflict that raged for 15 years and took the lives of 150,000 people. (Photo by Hassan Ammar/AP Photo)





In this September 5, 2013, file photo, a woman walks past a graffiti of former President Mohamed Nasheed in Male, Maldives. Maldives has been in a political turmoil since last year's February resignation of Nasheed, who was elected in 2008 in the nation's first democratic polls after 30 years of autocracy. (Photo by Sinan Hussain/AP Photo)





A man touches a mural depicting slain rapper Nipsey Hussle, Tuesday, April 2, 2019, in Los Angeles. Hussle was shot and killed Sunday, March 31, outside of his clothing store in Los Angeles. (Photo by Jae C. Hong/AP Photo)





In this October 10, 2018, photo, an Indian cycle rickshaw puller maneuvers his rickshaw past an awareness mural campaigning for a clean and green Delhi in New Delhi, India, Wednesday. Huge sums have been spent on a marketing blitz, including videos of Bollywood stars sweeping the streets, for the government's ambitious Swachh Bharat, or Clean India, program launched by Modi in 2014. (Photo by R.S. Iyer/AP Photo)





Picture shows a bus chartered by conservative association “Hazte Oir” (Make yourself heard) displaying an image of the leader of the Nazi Party, Adolf Hitler with make-up on his face and sporting a feminist symbol on his hat, in Barcelona on March 4, 2019, after protesters threw paint to it and peeled off part of its vinyl decoration. (Photo by Carlos Moreno/AFP Photo)





People stand in front of an murals at Lodhi Art District in New Delhi on March 24, 2019. Visitors throng Lodhi colony which has murals by dozens of Indian and international artists. (Photo by Sajjad Hussain/AFP Photo)





A woman walks past new street art in Shoreditch, east London, UK on August 19, 2018, paying tribute to the singer, Aretha Franklin who has died following a battle with pancreatic cancer. The mural has been created by artist, Jules Muck in collaboration with Global Street Art. (Photo by Vickie Flores/LNP)





View of a mural depicting late Venezuelan President Hugo Chavez in Caracas, on March 10, 2019. Sunday is the third day Venezuelans remain without communications, electricity or water, in an unprecedented power outage that already left 15 patients dead and threatens with extending indefinitely, increasing distress for the severe political and economic crisis hitting the oil-rich South American nation. (Photo by Matias Delacroix/AFP Photo)





A Sudanese youth takes rest near a revolutionary mural reading in arabic 'the honor of a soldier', in a street of Khartoum, Sudan, 23 April 2019. Sudanese protesters continue their sit in and gatherings near the army head quarters in a bid to pressure for a civilian council instead of the current military one, after the resignation of President Omar al-Bashir on 11 April. Some 50 protesters were killed since December 2018 when the protesters asking for a change of regime started. (Photo by EPA/EFE/Rex Features/Shutterstock/Stringer)