Writer Elizabeth Alexander Asks What It Means To Envision Black Freedom

On June 19th, 1865, federal troops arrived in Galveston, Texas to ensure that all enslaved people were freed, ushering in the end of slavery. Now, Congress has made it a holiday. On Today's Show: Elizabeth Alexander , president of The Andrew W. Mellon Foundation, poet, educator, memoirist and scholar, looks back through American history — both recent and not — and asks the fundamental question "what does it mean to be Black and free in a country that undermines Black freedom?"