Is racism a natural instinct in dominant males?

Back in the cave man days the men had to protect their territory against other tribes so that their family would survive. In the past few thousand years men have also been on the front line defending their country against foreign invaders, it's only recently in the past 40 to 50 years people have been told by the government to respect other races which goes against thousands of years of teaching. What are your views on my theory?Is racism a natural instinct in dominant males?
Racism is a natural instinct in everyone. It's society that tells us to work against it and be open minded and non-judgmental.Is racism a natural instinct in dominant males?
It is a theory but not one that I agree with.


Men are the natural protectors of our society and instinctively are wary of difference but not necessarily threatened by it otherwise our gene pool would become so narrow we would all be inbred and eventually would be wiped out.


Just my theory.
yes it was a way to sevive --if someone new come upon you you would have to see if they would be harmful or helpful to the group--without this prejudice groups would have been wiped out before they got started