The world gasped in April 2015 as Baltimore erupted and Black Lives Matter activists, incensed by Freddie Gray's brutal death in police custody, shut down highways and marched on city streets. In The Black Butterfly—a reference to the fact that Baltimore's majority-Black population spreads out on both sides of the coveted strip of real estate running down the center of the city like a butterfly's wings—Lawrence T. Brown reveals that ongoing historical trauma caused by a combinatio...