Hannibal B. Johnson, a Harvard Law School graduate, is an author, attorney, and consultant. He is a recognized expert on diversity and inclusion, with more than twenty years consulting with for-profit and nonprofit groups across the country, as well as writing and lecturing on the topic. Johnson teaches at Oklahoma State University and the University of Oklahoma. His several books include Tulsa's Historic Greenwood District, "Black Wall Street: From Riot to Renaissance in Tulsa's Historic Greenwood District," "Up from the Ashes," and "Acres of Aspiration: The All-Black Towns in Oklahoma," which chronicle the African American experience in Oklahoma and its indelible impact on American history. His book, "Apartheid in Indian Country?: Seeing Red Over Black Disenfranchisement" recounts the history of the Freedmen, persons of African ancestry who lived among the Five Civilized Tribes. Johnson has led the boards of local, state, and national nonprofits, and has received numerous honors and awards for his professional and community endeavors.