we didn't get here through peace and prosperity, we got here over thousands of years of war, conquer and slavery.
people will always be spiteful. life isn't easy for most of us and there's always reasons to be angry. if we eradicate racism through literally changing how the brain works there will always be problems. Imagine.. a perfect society... ruled by the best looking. I think we're already moving in that direction and that alone is the fascist trope at work in their secret eugenics experiment forming beautiful smiling faces to hide the ugly of the world with another lollipop. actually, I think that's just how humans work. Shallow, lazy opportunists.
again, I firmly believe disagreement is a natural, healthy part of human behavior and some of these biggoted notions are biological and have taken generations to form (I'm not saying I think this way, but I recognize the human race is very lowly) and I would be most afraid to live in a world where everyone agrees.
on the flip side - did you know at the 69 Woodstock concert, there were tens of thousands of people and not one fight? that's pretty remarkable.. i wonder what went so wrong...