Words can acquire new meanings.
Communism = Everything that is wrong in the world.
Communist = Someone who supports Communism.
As George Bush said in 2000: "When I was coming up, it was a dangerous world, and you knew exactly who they were. It was us versus them, and it was clear who them was. Today we are not so sure who the they are, but we know they're there."
With the collapse of the Soviet Union and China's conversion to capitalism in everything but name, communism had to take on a new meaning or else become irrelevant. And we can't just retire a word that had represented the national enemy for 50 years that easily!
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90s games > 00s games