But seriously, why didn't communism triumph in the 20th century when things were looking so good? If the russian revolution and chinese revolution can succeed, liberating 800 million people, 1/3rd of the world's population, defeat the nazis, why couldnt we finish the final stretch? What was the fatal flaw?
Other than stuff mentioned here, U.S also fucked with them. Thankfully, they can't do the same to China.
Also check this article out