Person
Daniel De Leon
American socialist newspaper editor, politician, Marxist theoretician, and trade union organizer.
Daniel De Leon (December 14, 1852 – May 11, 1914) is an American socialist newspaper editor, politician, Marxist theoretician, and trade union organizer.
He is regarded as the forefather of the idea of revolutionary industrial unionism and is the leading figure in the Socialist Labor Party of America from 1890 until the time of his death.