Brentin Mock, staff writer for City Lab, reports on the role of justice and civil rights in the laws and policies that govern our lives, particularly in the urban environment. He has a long history of reporting on environmental justice and voting rights, and voter suppression.  Monument Lab speaks to Mock about his recent piece for CityLab “The Strangest Form of White Flight,” a part of a larger series on the Cityhood movement in Georgia, which Mock describes as a Brexit-style secession to carve up new cities informed by racial politics and legacies of segregation.