Only republicans even bring that guy up. I am not a marxist and never have been. What I wrote here should give you that impression. The lack nuance you people think with is ridiculous.
Of course, Republicans are the only ones to bring up Karl Marx. Adolph Hitler, Vladimir Lenin, Joseph Stalin, Chairman Mao, North Korea, and of late, Venezuela have given his name a terrible reputation but Progressives simply believe those are an example of Socialism being done wrong.
Saying, as Billy000 feebly attempts that he is NOT a Marxist is hypocritical and a lie. The basis of Marxism theory is that Capitalists, in Marx, that means all those who own and run manufacturing and business exploit workers. From Marx comes the idea that capitalist profits are possible because the value is "stolen" from the workers and transferred to employers. He was, without question, one of the most important and revolutionary thinkers of his time.
That sums up Progressive's beliefs in a nutshell.
Socialism is the first step toward Communism.