Other Democratic Socialist Candidate for President: Who am I?

I was born in 1855. I started out as a labor leader. I founded the Social Democratic Party. I ran for President multiple times. In 1920 I ran from prison, having been convicted for my anti-war speeches. Who am I?

Find out at: http://historyweblog.com/2015/11/other-democratic-socialist-candidate-president/ 

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