It's a difficult question to answer. Even the Justices are having a hard time.

"More than 50 years after the Supreme Court outlawed segregation in public schools, the justices struggled over one controversial outgrowth of that decision Monday. They are divided over what role race should play, if any, in competitive admissions at elementary and secondary schools. Some justices highlighted the benefits of racial diversity in the classroom, while others on the bench worried about whether the voluntary integration programs constitute illegal racial quotas. CNN

__________________
"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….