deep down inside people heart... they want the world to be as clear as black and white... what is not white, is black...
So if they know which one is the good one, the other one is foul, bad, evil etc.
most conflicts happen because both sides are right, or both are wrong, nothing ultimate nor absolute in this world. I think Holy Bible and holy Quran said that, only God Almighty that is Absolute... but people want to be absolute too
so sometime I think its not about two side we need to take a look from, but it's more like we need to combat ourselves to let go ego and "absolute" in ourselves.