John Avlon : The horrific shootings in Newtown changed debate on guns . He says several pro-gun Democrats have spoken out for new controls . Avlon : A poll shows a boost in public support for gun control . But the NRA is still fighting to keep its grip on Congress and state legislatures, which has led some lawmakers to call for more restrictions.
John Avlon : The horrific shootings in Newtown changed debate on guns . He says several pro-gun Democrats have spoken out for new controls . Avlon : A poll shows a boost in public support for gun control . There is a moral urgency to follow through on this moment , he says .