It is a universal law of paradoxes of human nature

There is a good relation with the same language people, but depending on the situation
one group fight with the another group of the same people. At the same time the smaller groups are also fighting with each other. At the last, there is a fight of brothers in a family and even husband and wife.

Again at the same time, if there is any inconsistency in behavior or relation of one continent to another, all the broken groups are together again.