It may well be the most important part of the brain altogether
... and the leftist can easily be detected in a CT scan of the brain -- IT'S MISSING! NO, IT'S NOT AN OPTION! IT'S MANDATORY!
Ever since they discovered this, leftists have been calling the amygdala the "fear center" since it is associated with detecting hazards and threats in the environment and the right wing always has big, fat, prominent amygdalas. Since "fear" is the most basic part of biological existence, they may be right about that.