Beltane Fire Society performers celebrate the coming of summer by participating in the Beltane Fire Festival on Calton Hill April 30, 2019 in Edinburgh, Scotland. The event celebrates the ending of winter and is a revival of the ancient Celtic and Pagan festival of Beltane, the Gaelic name for the month of May. This years festival was highlighting climate change, with the central character The May Queen being seen to express her rage at the damage done to Earth. (Photo by Jeff J. Mitchell/Getty Images)

Young artists perform at the presentation of clowns in a hall of the Arts Palace during the first clown festival in Belarus in Bobruisk, some 150 km from Minsk, Belarus, 01 April 2018. About 60 clowns from Belarus and Russia gathered to entertain spectators. For 1 day Bobruisk became a capital of Jokes and Humour. Theaters of clownery, mime-theaters, individual performers of humorous genre, stilts and hospital clowns performed on a stage of the Palace of Arts. (Photo by Tatyana Zenkovich/EPA/EFE)

Revelers take a selfie during a Holi Festival in Madrid, Spain, Sunday, April 26, 2015. The festival is based on the Hindu spring festival Holi, also known as the festival of colours where participants colour each other with dry powder and coloured water. (Photo by Andres Kudacki/AP Photo)

A farmer uses a GoPro as he takes a picture of his carabao kneeling during the annual Carabao Festival in Pulilan, Bulacan in northern Philippines May 14, 2015. Water buffalos, locally known as carabaos, are led during a parade in the streets of the town to honour its patron saint San isidro Labrador, and carabaos will kneel in front of the church to give thanks for a year-long bountiful harvest. (Photo by Lorgina Minguito/Reuters)

A view of balloon depicting an Alebrije, is seen at the 14th Solar Balloon Festival in Envidago December 31, 2014. According to the festival organizers, the Alebrije balloon will be largest replica of an Alebrije. This year features a theme on Mexican history and culture, organizers added. (Photo by Fredy Builes/Reuters)

A man reacts after catching a trout with his hands during an event promoting the Ice Festival on a frozen river in Hwacheon, about 20 km (12 miles) south of the demilitarized zone separating the two Koreas, January 10, 2015. The annual ice festival, which is one of the most famous and biggest festivals in South Korea, expects to see more than 1,000,000 people attend. The festival lasts for three weeks from January 10 this year. (Photo by Kim Hong-Ji/Reuters)

Young women sit at a doorway during the annual San Antonio Abad (Saint Anton Abbott) festival in Trigueros, southwest Spain January 25, 2015. Thousands of people arrived in Trigueros to participate in this annual catching of food and presents, part of a traditional three-day religious festival. (Photo by Marcelo del Pozo/Reuters)

A Tibetan man stirs butter tea made for the arriving guest during the function organised to mark Losar or the Tibetan New Year at a Tibetan Refugee Camp in Lalitpur February 19, 2015. Tibetans across the world marked the arrival of the New Year with prayers and festivities. (Photo by Niranjan Shrestha/AP Photo)