...

it is something that really exists with all of its violence,and its smth so natural.
The things which are in the same classment but different from each other,clashes&fights everytime.As u know,life is a struggle of existance and the strong always tries to opress the weak,and the different people will always fight because of not understanding each other or finding each other weak.

I think it is something without any solution.
The only solution of that is to change the genes of the humans,which is impossible.