After the devastation at the 2012 Sandy Hook school shooting, one mother decided to take action to address gun violence in America. Shannon Watts is the founder of Moms Demand Action, a grassroots effort that has evolved into a national movement to take on the gun lobby. Watts joins us on Cheddar to discuss her new book, 'Fight Like a Mother: How a Grassroots Movement Took on the Gun Lobby & Why Women Will Change the World.'