. >> brown: poet elizabeth alexander led the project, and she, like the others, has her own personalctions. >> in african american history, in african american culture, as a black person myself, we all have some connection to migration at some point in our families. it really was very powerful to think, "this is what my mother, my very own mother, she comes from this." >> the past has long legs and is heavy, which was a kind of warning. stay clear of the enormous twisted tree on tidwell hill. >> brown: crystal williams grew up in detroit. her father had come from alabama. she chose perhaps the most harrowing painting in the series one about lynching. the poem she wrote, "year after year we visited alabama," became a gentle homage to her loving father. >> the poem really has to do with the lessons that i think we have lost. my father was truly one of the most gentle people i've ever met. and i understand now as an adult that that gentleness was a choice, that he was choosing, given what he had seen in the south, to live a life in which he looked for connections between people to pract