In recent years the United States has witnessed major controversies surrounding past American presidents, monuments, and sites. Consider Mount Rushmore, which features the heads of the nation’s most revered presidents—George Washington, Thomas Jefferson, Abraham Lincoln, and Theodore Roosevelt. Is Rushmore a proud national achievement or a symbol of the U.S. theft and desecration of the Lakota Sioux’s sacred land? Is it fair to denigrate George Washington for having owned slaves and Thomas Jefferson for having had a relationship with Sally Hemings, an enslaved woman, to the point of...