Divisive - Causing disagreement or hostility between people, tending to disrupt unity or harmony.

The election was fought over the deeply divisive issue of immigration, and people on either side of the issue can't see things from the other point of view.
binge - Indulge in an activity, especially eating, to excess
Bob loved eating pizza so much, that whenever he had a desire to eat pizza, he ordered several pies and would binge and continue eating until his bursting stomach couldn't hold any more food.