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Sen. Feinstein introduces a new and improved assault weapons ban

05:48

In the wake of the Newtown massacre, Senator Dianne Feinstein introduced a bill that would ban military-style assault weapons and high-capacity ammunition magazines, and also closes loopholes from the original 1994 ban of assault weapons. MSNBC's Lawrence O'Donnell and The Grio’s Joy Reid discuss the new bill and the NRA's reaction.