On today's Uprising with Sonali: Cristina Mislan analyses breaking news of the day. Plus, in the wake of the Oregon shooting tragedy, we'll hear about a study on mass shootings and the availability of guns. Then, a look back at Arne Duncan's tenure as Secretary of Education. And, author Annie Jacobson joins us to discuss her new book, The Pentagon's Brain: An Uncensored History of DARPA, America's Top Secret Military Research Agency.