Intellectual incest occurs in a closed society. Whatever group is closed off the restriction monsterizes them.. Disfigures them. Sad?

Incest is not limited to close relatives intermarrying and having children. Intellectual incest occurs all the time among strangers who get together in a group and believe they are superior to all others for whatever reasons. The obscenely wealthy/racists/bigots/homophobes/haters/traitors. They come together under a banner of whatever and are impenetrable. The saddest thing is their children are formed from them and become like them. A racist begets racists  begets racists begets racists. SIGH.