It's the idea that we as people can control our own destinies. The government and the corporations, more even than the government, can't dictate what artwork we're supposed to like or what comedy we're supposed to laugh at.
The further jazz moves away from the stark blue continuum and the collective realities of Afro-American and American life, the more it moves into academic concert-hall lifelessness, which can be replicated by any middle class showing off its music lessons.