Telling them won't work.
Even showing them won't work.
Until they feel the Jackboot kicking them in the butt and/or balls, they will not wake up.
They must experience Communism and what it would be like to live in a Communist country.
Unfortunately, we will have to experience it as well, and probably get the worst of it since they are going to disarm us, hunt us down, and imprison us.
Maybe when they see their loved ones being lined up and shot, then they will wake up. Of course, we'll be dead. But they will finally wake up.
But at least we will know that it was all part of the Plan