Many are wondering why the massacre at Sandy Hook Elementary in Newtown, Conn., on Friday occurred. In the small town, police are investigating all aspects of the crime, in which 20-year-old Adam Lanza shot and killed 26 people, but have released no clear motives for the mass murder. MSNBC host Melissa Harris-Perry and reporters Chris Jansing and Michael Isikoff say that the police have gathered some evidence in emails, which they are not sharing with media just yet.
Watch Harris-Perry, Jansing and Isikoff discuss the details of Friday's tragedy and the search for clues:
Watch more at MSNBC.