In this Tuesday, May 2, 2017 photo, children run off with boxes they filled with merchandise they salvaged from a cargo truck allegedly set on fire by drug traffickers, in Rio de Janeiro, Brazil. Several public buses and cargo trucks were torched in Rio de Janeiro on Tuesday in what Brazilian military police said was likely gang retaliation for a large anti-drug operation. (Photo by Silvia Izquierdo/AP Photo)





Bangladeshi youths play in a pool amid rising temperatures in Dhaka on May 23, 2017. (Photo by Munir Uz Zaman/AFP Photo)





A Yemeni child holds a weapon during an anti- US protest staged by supporters of the Huthi rebels in Sanaa on May 20, 2017. US President Donald Trump began an official visit to Saudi Arabia, which for more than two years has led a coalition conducting air strikes and other operations against rebels in Yemen. (Photo by Mohammed Huwais/AFP Photo)





Eli Whalen, 10, center, purses his lip as he salutes the lives of fallen soldiers who have made the ultimate sacrifice dying for their country in battle while paying his respects alongside fellow Boy Scouts and Cub Scouts alike on Memorial Day amidst hundreds of families attending a ceremony on Monday, May 29, 2017 at Fairview Cemetery in Linden, Mich. (Photo by Jake May/AP Photo)





Students with parents and teachers from 14 Chinese schools and 2 Russian schools parade during a carnival to welcome the upcoming International Children's Day on May 31, 2017 in Heihe, Heilongjiang Province of China. 14 Chinese schools and 2 Russian schools held a dress-up carnival on Wednesday in Heihe to welcome the International Children's Day. (Photo by VCG/VCG via Getty Images)





A young Ugandan boy sits outside the front of his house in the village of Kyanukuzi, near Masaka, in Uganda Thursday, June 1, 2017. (Photo by Ben Curtis/AP Photo)





Zeinab, 14, applies her make-up before heading to school inside her shelter at a camp for internally displaced people from drought hit areas in Dollow, Somalia April 4, 2017. (Photo by Zohra Bensemra/Reuters)





A rohingya refugee girl reacts to the camera with a smile at Balukhali Makeshift Refugee Camp in Cox's Bazar, Bangladesh April 12, 2017. (Photo by Mohammad Ponir Hossain/Reuters)





A girl stands next to alpacas Juliette (L) and Romeo, groomed for summer season, inside an open-air enclosure at the Royev Ruchey Zoo in the suburb of Krasnoyarsk, Siberia, Russia May 31, 2017. (Photo by Ilya Naymushin/Reuters)





A boy jumps in the Sardaryab river in Charsadda, Pakistan June 4, 2017. (Photo by Fayaz Aziz/Reuters)





Cuban children are pictured during a baseball trainning session in Havana, on February 7, 2017. (Photo by Yamil Lage/AFP Photo)





A boy looks at a whale shaped art installation that is made of plastic and trash made by environmental activist group Greenpeace Philippines, lying along the shore in Naic, Cavite, in the Philippines on May 12, 2017. (Photo by Erik De Castro/Reuters)





Kayapo people. Aukre, Kubekrankej, Rio Xingu, Brazil, 2009. (Photo by Cristina Goettsch Mittermeier)





A girl in “Volta Alice” troupe celebrates as part of the “Street Carnival” in Rio de Janeiro, Brazil, 12 February 2017. The “Street Carnival” features samba music, dancers and parades through popular neighborhoods of the city attracting thousand of specators. (Photo by Antonio Lacerda/EPA)





A girl walks amidst a dust storm on the banks of the Ganges river in Allahabad, India, February 24, 2017. (Photo by Jitendra Prakash/Reuters)





South Sudanese refugee children play on swings during morning break in the yard of the Ombechi nursery school, which has over 500 pupils and is supported by UNICEF and Save the Children, in Bidi Bidi, Uganda Wednesday, June 7, 2017. Bidi Bidi is a sprawling complex of mud-brick houses that is now the world's largest refugee settlement holding some of those who fled the civil war in South Sudan, which has killed tens of thousands and driven out more than 1.5 million people in the past three years, creating the world's largest refugee crisis. (Photo by Ben Curtis/AP Photo)





Internally displaced Somali children eat boiled rice outside their family's makeshift shelter at the Al-cadaala camp in Somalia's capital Mogadishu March 6, 2017. (Photo by Feisal Omar/Reuters)





In this Friday, January 27, 2017 photo, a dancer, framed by a Chinese dragon puppet, takes a break during Chinese New Year celebrations in Lima, Peru. Chinese worldwide marked the lunar new year on Jan. 28, the Year of the Rooster in the Chinese zodiac. (Photo by Martin Mejia/AP Photo)





In this Wednesday, May 31, 2017 photo, a youth climbs a flag pole to repair the rope, at his school in Havana, Cuba. With its economy in recession and longstanding oil aid from Venezuela in doubt, the Cuban government appears torn between the need for market-based reforms and the fear of social inequality that would spawn popular dissatisfaction and calls for political change. (Photo by Ramon Espinosa/AP Photo)





A Roma girl poses for photographers during celebrations for the “Hidirellez” festival in Edirne, Turkey, near the Greek and Bulgarian borders, Friday, May 5, 2017. The “Hidirellez” festival attracts thousands to the celebration in Edirne, marking the return of spring, with dancing, bonfires and bathing in the Tundzha River. (Photo by Lefteris Pitarakis/AP Photo)





An Indian nomadic Gujjar girl hangs on to a horse cart after collecting bricks from debris on the outskirts of Jammu, India, Tuesday, March 7, 2017. The Gujjar tribal communities are considered by some to be economically and socially backward and the lack of care by the state government has led to resentment amongst the community. The tribe moves to the plains from the hills to escape the cold winters. (Photo by Channi Anand/AP Photo)





A Palestinian boy plays under a donkey cart outside his house in an impoverished area in the southern Gaza Strip town of Khan Yunis on February 19, 2017. (Photo by Said Khatib/AFP Photo)





Filipino children play along the site of the re-enactment of the crucifixion of Jesus Christ on Holy Wednesday, San Pedro Cutud village, San Fernando city, north of Manila, Philippines, 12 April 2017. On Good Friday more than 40,000 tourists and devotees are expected to visit San Fernando, Pampanga to witness the crucifixion rites in Pampanga in observance of the Holy Week. (Photo by Mark R. Cristino/EPA)





A child penitent of the “Silencio del Santisimo Cristo del Rebate” brotherhood takes part during a Holy Week procession in the Spanish village of Tarazona on April 11, 2017. Christian believers around the world mark the Holy Week of Easter in celebration of the crucifixion and resurrection of Jesus Christ. (Photo by Ander Gillenea/AFP Photo)





Israeli children play on an army tank displayed by the Israeli military as part of Independence Day celebrations, in Givatayim, near Tel Aviv, Israel, Tuesday, May 2, 2017. Israel is celebrating 69 years since the modern Jewish state was formed. (Photo by Ariel Schalit/AP Photo)