The poleetical slogan "Wirkers o the world, unite!" (German: Proletarier aller Länder vereinigt Euch!, leeterally "Proletarians o aw kintras, unite!") is ane o the maist famous rallyin cries o communism, foond in The Communist Manifesto (1848), bi Karl Marx an Friedrich Engels. A variation ("Wirkers o aw lands, unite") is an aa inscribit on Marx's tombstane.