A performer entertains the crowd during a rally in support of the leader of the Cameroonian opposition party Movement for the Rebirth of Cameroon (MRC) in Yaounde, on September 30, 2018, prior to the upcoming October 7, presidential elections. (Photo by Marco Longari/AFP Photo)

Yogis, Israeli and foreigners, participate in the Arava Yoga Annual festival at the ancient copper mines area of the Timna Valley, in the southern Arava region of Israel, north of Eilat on November 2, 2018. (Photo by Menahem Kahana/AFP Photo)

Spain's Lidia Rodriguez, Spain's Marta Garcia and Spain's Raquel Roy compete in the Kata team female final during the 24th Karate World Championships at the WiZink center in Madrid on November 11, 2018. (Photo by Javier Soriano/AFP Photo)

A young Sandinista guerrilla takes aim with his 45 pistol as he stands waiting to do combat with the Nicaraguan National Guard in Managua June 23, 1979. The guerrillas still occupy major parts of the Capitol City. (Photo by McLendon/AP Photo)

This picture taken on January 3, 2019 shows a Vietnamese woman collecting incense sticks in a courtyard in the village of Quang Phu Cau on the outskirts of Hanoi. In Vietnam's “incense village”, hundreds of workers are hard at work dying, drying and whittling down bamboo bark to make the fragrant sticks ahead of the busy lunar new year holiday. (Photo by Manan Vatsyayana/AFP Photo)

Venezuelan artist Deborah Castillo licks the boots of a man dressed as a member of the military during her performance “Lamebrasil, Lamezuela – questioning power in Latin America”, in Sao Paulo, Brazil, March 24, 2019. (Photo by Amanda Perobell/Reuters)

A Palestinian woman reacts after inhaling tear gas fired by Israeli forces during a protest marking Land Day and the first anniversary of a surge of border protests, at the Israel-Gaza border fence, in the southern Gaza Strip on March 30, 2019. (Photo by Ashraf Abu Amrah/Reuters)

A woman wearing her traditional headgear attends celebrations to mark the Gudi Padwa festival, the beginning of the New Year for Maharashtrians, in Mumbai, April 6, 2019. Gudi Padwa is the Hindu festival that falls on the first day of Chaitra month and marks the beginning of the Lunar Calendar, which dictates the dates for all Hindu festivals, also known as Panchang. (Photo by Francis Mascarenhas/Reuters)