Group of trade union members wearing masks of President Gotabaya Rajapaksa (2-R), prime minister Mahinda Rajapaksa (3-R) and Finance Minister Basil Rajapaksa (R) during International Labor Day rally in Colombo, Sri Lanka, 01 May 2022. The International Labor Day or May Day is observed all over the world on the first day of May to celebrate the economic and social achievements of workers and fight for laborers' rights.