In this excerpt from Kennedy's 1963 Civil Rights Address what idea is being most clearly defined?
"This is not a sectional issue. Difficulties over segregation and discrimination exist in every city, in every State of the Union, producing in many cities a rising tide of discontent that threatens the public safety. Nor is this a partisan issue. In a time of domestic crisis men of good will and generosity should be able to unite regardless of party or politics."
diversity
equality
ethnic
Society tends to mistreat someone or something that does not follow its ordinary norm, whether it's ethnicity , cultural , ideology, or even merely physical difference. The excerpt address the exact issue