We discuss that our human behaviour has a major influence via genetics through evolution so that for hundreds of millions of years most living organisms are pack animals and furthermore hierarchical. We explain how epigenetics can influence the behaviour of one generation from actions and experience of the previous and we discuss biological differences between men and women and how these match most of what is seen in nature. Political correctness is the ignorance and arrogance to assume humans are more than they are and not intimately linked to all life forms on the planet where we have to live and harmoniously coexist. This ignorance is dangerous and destructive to structure of everyone and everything.