Most of them never heard of Yuri Bezmenov, and wouldn't believe his statement that the useful idiots are the first ones lined up and shot. It's ex-smokers that most vehemently discourage it, and once trust fund Commies see actual Communism, they'll suddenly be ex-Commies, which, just like ex-smokers, will be the most zealous anti-Communists possible, which is why they'll be shot first.

Thanks!