You could argue that the cackle comment is sexism, but it's been plainly clear to me for some time now that Scarborough doesn't like Rachel because she's a liberal on Air America and that her being a woman has very little to do with it. Personally, I'm more bothered by the fact that he never bothers to listen to the substance of any of her arguments and automatically disagrees with them because they're coming from her. I can believe that sexist comments get lumped in with his criticisms of her positions, but it doesn't start there. It starts with his complete intolerance of talking with someone who believes something different than he does. I saw him do the same thing on Real Time with Bill Maher when he was talking to Matt Taibbi. On some issues he can be completely rational, but there a handful where he loses all inability to do so and just lashes out in whatever area he thinks is most vulnerable because he's unable to refute the facts that oppose his shaky positions on those issues.

It's an anti-liberal bias, not an anti-female bias.