A mass pillow fight in Trafalgar Square in central London on April 5, 2014 on International Pillow Fight Day. (Photo by Jane Scanlan)

Couples take part in a competition during a mass wedding of 64 doctoral student couples at Harbin Institute of Technology, a university in Harbin, Heilongjiang province, China, June 4, 2017. (Photo by Reuters/Stringer)

A couple shares a light moment in a Mass Transit Railway (MTR) subway train in Hong Kong, China on August 28, 2019. (Photo by Anushree Fadnavis/Reuters)

North Koreans perform during a mass game of “The Land of the People” at the May Day Stadium in Pyongyang, North Korea, Tuesday, June 25, 2019. (Photo by Jon Chol Jin/AP Photo)

People take part in mass water fights during the first day of Songkran, or Thai New Year, on Khao San Road in Bangkok on April 13, 2023. (Photo by Lillian Suwanrumpha/AFP Phoot)

A young Catholic waits for the start of mass at the church of Saint John the Baptist during the mud festival at Bibiclat, Nueva Ecija province, northern Philippines, Monday, June 24, 2024. (Photo by Aaron Favila/AP Photo)

Palestinian couples participate in a mass wedding ceremony in Hamad City in Khan Younis, Gaza Strip, Tuesday, December 2, 2025. (Photo by Abdel Kareem Hana/AP Photo)

A pair of black-necked stilts fight over their marshland territory in Orlando, Florida in the last decade of July 2024. (Photo by Jake Landing/Solent News)