Linda Hirshman is the author of many books about social change, including the New York Times and Washington Post best selling "Sisters in Law: How Sandra Day O'Connor and Ruth Bader Ginsburg Went to the Supreme Court and Changed the World." Her most recent book is "The Color of Abolition: How a Printer, a Prophet and a Contessa Changed America." Her occasional writings have appeared in the Times, the Post, and many other outlets.