Prejudice

You find insight everywhere. While watching Bhowani Junction (1956), a film of the last days of British rule in India, Stewart Granger, as Col. Rodney Savage, responds to a disparaging remark about the bi-racial, Anglo-Indians, saying: “I never hate in the plural.” It’s a great way of explaining prejudice. Novelist John Masters and screenwriters Sonya Levien and Ivan Moffat likely deserve the credit for that.
Another great and similar expression is the General Semanticists’ “The more you discriminate among, the less you can discriminate against.”