In the summer of 1965, several Ku Klux Klan members riding in a pickup truck shot two Black deputies on patrol in Washington Parish, Louisiana. Deputy Oneal Moore, the driver of the patrol car and father of four daughters, died instantly. His partner, Creed Rogers, survived and radioed in a description of the vehicle. Less than an hour later, police in Mississippi spotted the truck and arrested its driver, a decorated World War II veteran named...