A Soviet propaganda poster depicting a parade. Titled May First on the bottom. Inscription in Russian in the upper left: Proletarians of all countries and oppressed peoples of the whole world, unite! V.I. Lenin. Technical inscriptions in the lower left. Published by the Soviet Artist Publishing House in 1969. Design by Viktor Koretsky, 1909 ещ 1998, a Soviet painter and poster designer. International Workers Day, also known as May Day, is a celebration that is promoted by the international labour movement and occurs every year on May 1st. May Day was one of the biggest holidays in Soviet Union. Soviet Historical Collectables, Wall Prints.