You must leave this world a better place than it would have been if you had not existed.

What I love about the stories of the Great Migration is that this is not ancient history; this is living history. Most people of color can find someone in their own family who had experienced a migration of some kind, knowing the sense of dislocation, longing and fortitude.

And in some ways, to me, that's one of the inspiring and powerful things about the Great Migration itself. There was no leader, there was no one person who set the date who said, 'On this date, people will leave the South.' They left on their own accord for as many reasons as there are people who left. They made a choice that they were not going to live under the system into which they were born anymore and in some ways, it was the first step that the nation's servant class ever took without asking.

There were colored and white waiting rooms everywhere, from doctor's offices to the bus stations, as people may already know. But there were actually colored windows at the post office in, for example, Pensacola, Florida. And there were white and colored telephone booths in Oklahoma. And there were separate windows where white people and black people would go to get their license plates in Indianola, Mississippi. And there were even separate tellers to make your deposits at the First National Bank in Atlanta.

Many immigrants do not talk about what they endured back home. They were fleeing that world, and when they left they didn't want to talk about it because there had been pain and heartbreak under the caste system of the South. They didn't want to burden their children with what they had endured.

Well, I'm a daughter of the great migration as, really, the majority of African Americans that you meet in the north and west are products of the great migration. It's that massive. Many of us owe our very existence to the fact that people migrated.

Sometimes in some places they would actually stop the train - keep the train from stopping at a particular station because they saw that there were so many black people there waiting to board and so therefore those people wouldn't get to leave.