Your identification of communists with scientists is typical of the slander flung by the religious on this forum. It is of the same nature as claiming that Islamic terrorists are identical to Christians because both believe the same Creation story.
Why get worked up over it? Ben Franklin was a scientist, and some of the anti-science people around here would accuse him of being a commie too. Retardation is a terrible misfortune; and when I see examples of it around here, I do the polite thing and ignore it.
It's not slander. Communist doctrine mandates Atheism.
Atheists often look to science for their comfort.
I agree that not all Atheists are Communists. However I find your parallel simplistic.