Peter S. Canellos, a current editor at POLITICO and former editor at The Boston Globe, is the author of “The Great Dissenter: The Story of John Marshall Harlan, America’s Judicial Hero” (2021). Canellos will share highlights from his new book on Justice Harlan, discussing how a former slave owner and Centre College alumnus, with the help of a once-enslaved man who grew up alongside him and was believed to be his half-brother, changed American law with his famous lone dissent in Plessy vs. Ferguson (1896). Harlan’s objections to the “separate but equal” doctrine provided a strong basis for future judicial rulings that expanded access and equity to all Americans over the past century