First, if you have the time, i strongly recommend listening to this podcast by Stefan Molyneux on Karl Marx. If you don't, then allow me to give you the Thug Notes version:
From what superficial studying of Karl Marx as an individual I did, I knew the guy was not right. He came from a relatively wealthy family, always had financial problems, ended up marrying into wealth, but still managed to squander it. He never had a real job and instead focused his efforts on his political-economic theorizing. This lack of focus and adult responsibility is clearly evidence in Das Kapital. Not because of it advocating childish theories, but the writing is HORRIBLE and PAINFUL to read. It was blathering, not a logical, succinct, cogent argument for socialism.
Beyond that I never gave Marx, the person, another thought. However, until I listened to the podcast above, I had no idea just how literally and genuinely insane the man was.
Marx was indeed an older version of today's hipsters. He lived off of other people's money, and when those sources dried up, he would go and try to find others. He viewed real work beneath him and had a crusaderist view of himself which is why he was always "researching" in the library to advance his own economic religion. This alone is enough to make me see red, but mercy almighty, it gets much worse.
Marx also didn't like to bathe. That rats nest of a beard is not by accident. It's because of a lack of hygiene. Because of his preference to avoid basic grooming (probably too much work) he ended up having boils over his body regularly. This is not the sign of a sane person, but somebody who obviously had mental problems.
Further evidence of mental problems are abound if you look into his family life. Such a poor provider was he that 4 out of his 7 children died before the age of 18. 2 of the survivors went onto commit suicide. Marx also sired an illegitimate son with his maid, a woman he never paid, but lived with the family.
Finally, Marx was a hypocrite. To avoid creditors he would use aliases, skipping out on rent and often times not paying butchers, tailors, and other "workers" he so claimed were "exploited" by those evil capitalists. Further more, he was an intellectual hypocrite. Instead of using facts and data to create theories, he did it the other way around. His entire "research" was spent trying to find proof and evidence that his childish and naive ideology would work.
There is certainly more, but the larger point is a simple one:
Karl Marx was batshit insane. He was psychotic. And to believe or subscribe to any ideas the man had (be it political, economic, familial or anything) is foolish.
History has proven this. Only a madman's illusions de grandeur could result in killing more people during peace time than Nazi's did purposely during war. You can compare similar people's implementing Marxism vs. freedom (the Koreas, East vs. West Germany, Cuba vs. Caymans, etc.). And you can look to see what happens when countries abandon socialism in pursuit of capitalism (China, Vietnam, the Baltics). But the real issue isn't what a "moron" or "psychopath" Marx was. It isn't even the devastation and poverty his cancerous and flawed "theories" has wreaked upon the world.
It's the scary fact as to just how receptive humans are to such a stupid, and ultimately, dangerous and evil ideology.
This is why you can't criticize Marx. There have always been idiots. There have always been megalomaniacs. There have always been psychopaths. It the fact humans are actually stupid enough to listen to these morons that is the problem.
For example, it is a fact, A FACT you can't just "print off more money." They tried it in ancient Rome, they tried it in the Weimar Republic, they tried it in Yugoslavia, and they continue to try it in Venezuela, Argentina, and yes, these United States. You would think with a basic and cursory knowledge of world economic history we would know that printing off money will not solve any economic problems and will only bring about a collapse in the economy. But we still do it. And the reason isn't a lack of knowledge, but psychological. Human's want to believe they can have their cake and eat it too.
Another example, obesity. We all know what causes people to be fat - too many calories, not enough exercise. The solution is simple - work out more and eat less. But despite having the KNOWLEDGE the human mind performs acrobatics to ignore this reality and rationalize away pigging out, and obesity rates continue to increase. (Some humans are so delusional and weak-minded, they've even gone so far as to advocate "fat acceptance).
And a third example, minority poverty. It is a fact illegitimate children are the number one cause of poverty. Throw in a lack of education in STEM fields as well as a propaganda-destroyed work ethic, and it is very clear why minorities suffer lower standards of living. The solution is simple - don't have illegitimate children, studying in fields that are in demand, and work hard. However, despite KNOWING this is the path to success, the majority of minorities would rather swallow the spoon-fed lie that it is "discrimination" that is keeping them down and wallow in a Detroitian self-pity.
We could go on as the examples are endless, but the point is that it isn't "bad ideas" that threaten society, but a weakness in human psychology that excuses people for believing in them. The belief that you can have something for nothing. The inability of the human mind to understand delayed gratification. The willful ignorance of not asking "where does the money come from?" It's almost as if there's a piece of the brain that, despite thousands of years of wisdom, evidence and fact, stubbornly insists on forcing its host to make bad decisions in the long run.
Because of this merely criticizing Marx, socialism, and socialists won't work. The people that need convincing do not believe in socialism or Marxism on a logical level, but an emotional, psychological, even greedy one. Throw all the charts up in the world, cite all the case studies of North vs. South Korea, point to China's historic improvement, it won't work (trust me, I've tried) simply because socialism's adherents WANT to believe in socialism just like a fat woman wants to believe "one more cookie won't hurt" or an alcoholic's belief that "one more drink is fine" or a 38 year old spinster's belief that "38 is the new 24."
Therefore, I suggest a new approach when battling socialism. Instead of fighting it on a logical and mathematical level, we fight it on a psychological one. Understand Rush Limbaugh, Sean Hannity, and Dennis Prager have been doing the same damn thing, day in, day out, and the country has still dramatically shifted to the left despite their admirable work. Their factual tactics have failed. But if we were to do something on a psychological level, especially something they won't dare do, then we might actually see success where they have failed.
I suggest being mean.
Specifically, shame, mockery, and ridicule.
For example the shame, mockery and ridicule that is rampant in the Manosphere has done more to not only free men from their psychological brainwashing, it strikes right at the core of female psychology - shame. 40 years of touchy feely nice guy bullshit has only allow feminism to run rampant over Baby Boomer and Gen X men. It wasn't until about 8 years ago or so did some men say, "fuck this, we're done," and dared to start mocking women for being naive in their political beliefs, shame them for being fat, ridicule them for majoring in stupid subjects, and start holding them to task about wanting to be genuine equals. The jury is still out on whether this tactic has worked, but based on the cumulative "chatter" of social media sites younger women are at least taking note and not swallowing whole their 60's grandmother's feminist bullshit.
Another example the black community. I am obviously indifferently harsh on the black community (and other minority communities). Do I do this because I hate minorities? Do I do this because I am a racist?
No, I do this because I refuse to lie to my fellow man. I could no longer tolerate delicately dancing around eggshells and gingerly trying to maybe convey the concept that hopefully someday maybe, kind of, our minority brothers and sisters will kind of sort of maybe see the logic I'm trying to convey.
Fuck it. Don't have time. Don't have the patience.
Black community, stop fucking up and get your shit together.
And shocks of shocks, guess what! I have a disproportionately higher black readership (especially young black males) who appreciate me giving them the straight dope instead of lying to them to spare their feelings. Again, despite having a fraction of the audience, I've converted more blacks to libertarianism/conservativism in the last year than Dennis Prager has in 20.
Again, we could go on, but the point is simply this:
You can't criticize ideas.
But you sure as hell can criticize the idiots who believe in them.
And it is that psychological line where the battle for freedom, liberty, and capitalism should be fought.