nra executive vice president wayne lapierre appeared on "meet the press" with a controversial take of what went wrong. >> the problem is there weren't enough good guys with guns. when the good guys with guns got there it stopped. >> reporter: hours of hard and vastly different settings lapierre and the president's comments were almost a match of point, counterpoint. >> it ought to be a shock to all of us as a nation and as a people. it ought to lead to some sort of transformation. >> we need to look at letting the men and women that know firearms and are trained in them do what they do best which is protect and survive. >> reporter: the president once again grieving with americans after four other major mass shootings during his presidency, and ft. hood, texas, tucson, arizona, aurora, colorado, and in to youtown, connecticut, last december. ♪ what's clear, this debate will continue with both sides still unwilling to yield. >> this is the change that we need and it's a change