If we don't debunk bad ideas on an ongoing basis there will be a resurgence of these ideas with each new generations. Just look at the resurgence of Marxists ideals among millennials that grew up after the collapse of the Soviet Union. We lost the best example that communism is a terrible idea so people aren't educated about it. The amount of young people willing to dispense with freedom of speech, democracy, capitalism because they are oblivious to the value of these ideas and under appreciate the negatives that come with the alternatives.
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