George Floyd's Tragic Death Symbolizes the Struggle of Black America July 28, 2020 Sharrelle Barber, ScD, an assistant research professor in the Dornsife School of Public Health, was quoted in a July 24 guest opinion column in Knox News (Knoxville, Tennessee) about residential segregation, environmental racism, and mass incarceration in America. The story also ran in Tennessean. Link to story