If you put 100 black ants and 100 red ants in a jar, nothing will happen.
But if you shake the jar hard, the ants will start killing each other.
The red ants will consider the blank ants their enemies, and the black ants will consider the red ants their enemies.
The real enemy is the one that shakes the jar!
The same thing happens in human society.
So before we attach each other, we should think about who is shaking the jar!