I like to make a distinction between RW radicals and RW fanatics

[Commie Pinko Dirtbag]

RW radicals think everything leftist must be evil.

RW fanatics think not only everything leftist must be evil, but also everything evil must be somehow leftist!

That, coupled with "everything I don't like is evil," gives rise to the tinfoilhatty illusion that the world is nearly overrun by an evil, centuries-long leftist conspiracy inspired by Satan himself. Plus much other nonsense like "Hitler was a leftist" or "Hitler wanted to exterminate Christians just like he did Jews" or "Tinky Winky is gay propaganda."

The generalizations arwalden refers to here are nothing more than an instance of that.