CHARLESTON, SC - AUGUST 7: Democratic presidential candidate and U.S. Sen. Cory Booker (D-NJ) speaks to a crowd about gun violence and white nationalism at Emanuel AME Church August 7, 2019 in Charleston, South Carolina. Booker's event, at the site where nine black parishioners were murdered in 2015 by a white supremacist, comes in response to last week's racially motivated mass shooting in El Paso, Texas. *** Local Caption *** Cory Booker