"Sure but what they did to MLs on raddle suggests they have no intention of learning or reading history"

They're not a homogenous group who blanketly agreed to ban MLs. So long as they aren't allowed to spread CIA propaganda, it's far better to try and convince them to learn about Marxism. Remember that we don't all start as Marxist-Leninists, and I suspect most of us were at some point anarchists, succdems, etc.