Across the United States, police officers are being given a new arsenal of big data tools and with this wealth of information, a promise of smarter and more fair law enforcement. But, it raises some pretty big questions about privacy, security, and equity. We talk with Andrew Ferguson, author of the new book, The Rise of Big Data Policing: Surveillance, Race, and the Future of Law Enforcement.Music From the Free Music Archive: "The Grass is Always Greener" by Pure Grease.