Only a person who has doubt within him/her/self becomes a fanatic.
A fanatic Socialist, a fanatic Capitalist, is a person who does not really know and trust his/her political ideology. He/she becomes fanatic, aggressive, not to prove anything to others, but to prove to him/her/self that he/she really believes.
When you really know that your way of life is not creating more misery on other people, you are not a fanatic at all.
You do not have to prove or disprove anything to anyone, you have peace of mind.
Hector Ahumada – Hector Fuentes – Juan Datura.

You have to read his work – reason by yourself, ideally under no drugs, political and religious thoughts influence –
He was right enough of the time about enough important issues.
Marx’s ideas are not perfect but plausible.
Marx’s ideological content of his work is not limited to a section of mankind but supported by people of all races, nations, religions and civilizations.
Capitalism, usually disguised under pseudonym as: “the modern age” “industrialism” or ” The West” as ceased to be as natural as the air we breath, in other simple words ” capitalism is in trouble”
Marx was the first to identify the historical object known as “capitalism.”
From Terry Eagleton