Evan McMorris-Santoro1:58 PM EST, Sunday December 16, 2012
CREDO, a progressive grassroots group, is organizing a march on the National Rifle Association's lobbying arm in Washington, D.C. Monday.
"After the shooter Adam Lanza, no one is more to blame for the massacre of 20 first graders and six women at the Sandy Hook Elementary School than the National Rifle Association," CREDO wrote on the Facebook page
where the march is being organized. "To stop the senseless killing we must first stop the NRA."