Social psychologist Robert Livingston has spent decades studying racism and advising businesses and nonprofits how to confront it in their workplaces. In a new book, "The Conversation: How Seeking and Speaking the Truth About Racism Can Radically Transform Individuals and Organizations," the Harvard Kennedy School lecturer in public policy argues that racism can be battled with constructive dialog. The Gazette recently spoke to Livingston about what fuels his optimism and how people can help bring about meaningful change.