Dont dismiss these people as stupid.
They are more cunning than most of us. The democratic party in the U.S. (for example) is the longest, continuous formal political party in recorded history. They are not retarded.
Marxism, communism, maoism, leftists, Progressivism (whatever you call it). is a very serious threat to individual freedom. If they were retarded, we wouldn't be where we are today. Do not underestimate these people by calling them retarded.
