1) Abortion
2) Democratic Party/Republican Party
3) Gun Control
4) Capital Punishment
5) Pepsi/Coke
6) America/Europe (living standards, culture, soundness et al)
7) Chain Restaurants/Family one-off Restaurants
8) High Culture/Low Culture
9) Zombies/Vampires
10) Looking Down On Others/Not Giving A Shit
Any others?