Fear, rage, and sex are all governed by the amygdala, which is part of the lower-level, "chimp-like" limbic system of the brain. It's apparently hyperactive in these people, likely caused intentionally from a combination of chemicals in the environment and propaganda.

This is a massive faggot, yes, but also a victim of psychological warfare. I'm still looking for the scientific explanation of why so many (even seemingly normal people) are trooning out all of a sudden.