Despite generations of failed communism, it is tried over and over again. Why does reason never prevail? Because wherever there is prosperity there is the leisure to focus on the more and more minute flaws of prosperity. This is the opening for communist propaganda. It's a classic case of focusing on the speck in capitalism's eye and ignoring the plank in communism's eye.
Communism needs a healthy host, a prosperous one that can support the first years of communism, preferably one where communist agents can be voted into office with messages of socialism. This is what makes a democratic republic with a capitalist system the most susceptible to communist propaganda. Socialism is the stepping stone, the softer version that cooperates with capitalism to keep the economy strong, but it is how a capitalist system transitions to communism.
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