Sometimes referred to as 'eugenics'. The idea that one group of people, due to some inherent superiority, should rule over others. Don't we all want to be in that group? Don't we fear that we are in the other group?
Robert Klark Graham, founder of the Nobel Sperm Bank, was fond of placing advertisements in various publications (particularly Mensa publications) that simply said "The smarter you are, the more children you should have."
On the surface, that seems a fine and sensible sentiment. But underlying it is the hidden opposite, unspoken "stupid people should not have children". In this century, no sensible person will speak this aloud, though they may think it.
Some might note that humanity has reversed the 'survival of the fittest' concept that is universal among other living organisms, by going to great lengths to protect and preserve the least fit among us. And allowing them to reproduce. The DNA pool of the human race now carries more disease and dysfunction than would have occurred had nature prevailed.
But soon we can begin to correct that. We need a bit more research, more investment, more government encouragement. When we begin modifying the DNA of individuals, there will be some 'test animal' humans, and after proven success the wealthy will be beneficiaries.
Then we face the reality that some may be able to enhance their bodies, minds, lifespan and that of their children according to their ability to pay, and others will continue to live in increasingly shabby circumstances. Are we approaching an even more extreme social imbalance?