But do you suggest that blind faith in a system which was made up in the 19th century and which interpretations have kind of failed in the 20th century should be followed blindly?
Dude, you don't do a whole lot of reading, do you? Try looking up Antonio Gramsci, an Italian communist who did most of his writing in the first quarter of the 20th century. The guy practically invented syndicalism. While you're at it, check out the history of the Wobblies in the U$ (aka the Industrial Workers of the World). They totally did away with Marx's analysis that capitalism is self-defeating, but still should be smashed because it is inhumane. After that, check out a guy named Paolo Freire. He's from right around the corner from you, a little place you may have heard of: Brazil. Most of his best work was written in the 1970s.
Communism doesn't begin and end with Marx and Engles, companero.
O, why should wrath be mute, and fury dumb?
I am no baby, I, that with base prayers
I should repent the evils I have done:
Ten thousand worse than ever yet I did
Would I perform, if I might have my will;
If one good deed in all my life I did,
I do repent it from my very soul.
Act V, Scene III; Titus Andronicus--W. Shakespeare