The ugly side of high IQ is millions of people had to be killed to get there. Evolution is a two step process: something gets selected for, and something else gets voted off the island. The Holocaust resulted in a measurable IQ boost in the surviving Jewish population. The Einstein types tend to get away. It was the largest increase in group IQ the last century. The Jews have been on the receiving end of kinetic envy for thousands of years. Now the surviving Jews are among the smartest killers on Earth. In the Middle East, tribal warfare has evolved into a sport. There are people in Israel that have come to secretly enjoy the win. Like a sport hunter managing game numbers, military leaders sometimes pull back out of a sense of sport.
As a famous person once said... “Two groups of people whose members are easily identifiable as belonging to one or the other group, and whose AVERAGE group IQ is significantly different, will never be able to peacefully coexist together”
The reason is fairly obvious if one stops and thinks about it for a minute.