Marx - Engels - Lenin ........

these are the guys who fought and spoke out for Worker's Rights

.The fight for the 8-hour working day in the United States in the 1880s was the issue that gave birth to 1 May as International Labour Day.

Dis didnt come easy ...
Hence Red, yes it was the commies who first shed their blood for worker's rights

Marx held that the foundations of reality lay in the material base of economics rather than in the abstract thought of idealistic philosophy. He earned a doctorate at Jena in 1841, writing on the materialism and atheism of Greek atomists, then moved to Köln, where he founded and edited a radical newspaper, Rheinische Zeitung. Although he also attempted to earn a living as a journalist in Paris and Brussels, Marx's participation in unpopular political movements made it difficult to support his growing family. He finally settled in London in 1849, where he lived in poverty while studying and developing his economic and political theories. Above all else, Marx believed that philosophy ought to be employed in practice to change the world.
The core of Marx's economic analysis found early expression in the Ökonomisch-philosophische Manuskripte aus dem Jahre 1844 (Economic and Political Manuscripts of 1844) (1844). There, Marx argued that the conditions of modern industrial societies invariably result in the estrangement (or alienation) of workers from their own labor. In his review of a Bruno Baier book, On the Jewish Question (1844), Marx decried the lingering influence of religion over politics and proposed a revolutionary re-structuring of European society. Much later, Marx undertook a systematic explanation of his economic theories in Das Capital (Capital) (1867-95) and Theorien Über den Mehrwert (Theory of Surplus Value) (1862).
Marx and his colleague Friedrich Engels issued the Manifest der kommunistischen Partei (Communist Manifesto) (1848) in the explicit hope of precipitating social revolution. This work describes the class struggle between proletariat and bourgeoisie, distinguishes communism from other socialist movements, proposes a list of specific social reforms, and urges all workers to unite in revolution against existing regimes. (You may wish to compare this prophetic document with the later exposition of similar principles in Lenin's State and Revolution (1919).)

For Lenin, dis space is not sufficient go to
http://www.time.com/time/time100/leaders/profile/lenin.html