Ugly people are more aggressive.

Or rather people who are asymmetrical (having ears, fingers or feet of different sizes or shapes) are “more likely to react aggressively when annoyed or provoked” and people who are more symmetrical are seen as attractive. That second article is longish but I couldn’t put it down when it came out…in 1996!

Action News Update: I fancied the two links above into a posting on Plastic.