In 1890, May Day “reached” the Russian Empire, where it was first marked by a strike of 10,000 Warsaw workers. Since 1900, various demonstrations and strikes have been held annually on May 1st, but it became possible to freely celebrate May Day only after the victory after the February Revolution (February 1917) – before this date, the holiday was considered “Sedition” and was officially banned by the Czarist government. And already on May 1st, 1917, under the Bolshevik slogans “Down with the Imperialist War” and “All Power to the Soviets,” millions of workers marched along the streets of Russian cities!