May Day, also known in Russia as the Day of International Workers Solidarity, the 1st of May () was celebrated illegally in the country until the February Revolution enabled the first legal celebration in 1917. The following year, after the Bolshevik seizure of power, the May Day celebrations were boycotted by Mensheviks, Left Socialist Revolutionaries and anarchists. It became an important official holiday of the Soviet Union, celebrated with elaborate popular parade in the centre of the major cities. The biggest celebration was traditionally organized in Red Square, where the General Secretary of the CPSU and other party and government leaders stood atop Lenin's Mausoleum and waved to the crowds. Until 1969, the holiday was marked by military parades throughout the RSFSR and the union republics. The following was the order of the march past: