Best way to increase animosity between two groups is unequal treatment. That this basic concept is not discussed in sociology even if its effect is pretty clear

Best way to increase animosity between two groups is unequal treatment. That this basic concept is not discussed in sociology even if its effect is pretty clearly observable doesn't speak for the field in my opinion. What happens with group A if you constantly prefer group B. Especially if there are no substantial differences, you should see animosity rise quickly. > would you agree if your kid marries someone from X Quite frankly I believe this is trailing society by at least 30+ years. In the US and other countries. Perhaps there is a divide between older and newer generations somewhere, but the topic certainly does not warrant state intervention.