You might as well ask when human beings became Frankenstein monsters, incapable of empathy, sympathy or compassion? Doesn't the Bible speak against Usury; then how is it we have come to this place? Its like I asked in the post "Sublimation" was Horemheb's edict needed prior to the invasion of Africa by Semitic foreigners? Or as Eja once said "He who feels it, knows it." If it's not innate/natural no amount of learning and litigating will cause it to manifest.

It remains true that unadulterated Africans are still the most accepting human beings on the planet.