THE ADVERSARIAL SYSTEM
Christians vs Muslims; Pro-Choice vs Pro-Life; Labour vs Management; Plaintiff vs Defendant; the Good Guys vs the Bad Guys.
Whichever way you cut it, Western Society (and quite possibly the entire planet...but, since I've only experienced Western Society, I won't make any pretenses of being knowledgeable on other societies) appears to love being separated into factions and then fighting over who is Right.
