The Avenging The Ancestors Coalition (ATAC) is a broad-based organization of African American historians, attorneys, concerned citizens, elected officials, religious leaders, media personalities, community activists, and registered voters. Based in Philadelphia, its influence is international. ATAC was founded in 2002 to compel the National Park Service (NPS) and Independence National Historical Park (INHP) to finally agree to the creation of a prominent Slavery Memorial to conspicuously permeate the President’s House project. The purpose of the Slavery Memorial is to honor primarily the nine African descendants enslaved by President George Washington at the President’s House, which is also known as America’s first “White House” and which was located at the current site of the new Liberty Bell Center in Philadelphia at Sixth and Market Streets. Those nine were among the 316 Black men, women, and children enslaved by Washington at his Mt. Vernon, Virginia plantation.