I've met a lot of milquetoast Left-leaners who are so lost in the "stereotypical right winger" that it precludes any other idea.

The notion that because The Right is racist/sexist/homo-haters and therefore evil, anything they say must be a front to do evil things and trick them rather than having any other principle.

Its one of the most effect narratives the Left has pushed. Because even the Right itself falls for it. Its why they spend all day trying to push blacks and womens and gays to the forefront to prove they totally aren't that way.