President Obama recognized his own powerlessness to stop another tragedy and begged with voters to force change in themselves Thursday due to his anger regarding gun massacres, that do exists for years,

The president said in the James S. Brady Press Briefing Room, named for a man severely wounded by a would-be assassin's bullet, "So tonight, as those of us who are lucky enough to hug our kids a little closer are thinking about the families who aren't so fortunate. I'd ask the American people to think about how they can get our government to change these laws, and to save these lives and let these people grow up."

The president therefore admitted that he was not capable to do anything to stop such tragedies by himself. And he did little to attempt to conceal the frustration and anger that have deepened as he returns again and again to the White House desk receiving news about the burial of a deadly mass shooting.

Mr. Obama took a veiled criticism at the National Rifle Association, which has effectively fought most restrictions on gun use and produce and has pushed through legislation in many states making it easier to own a gun. "And I would particularly ask America's gun owners who are using those guns properly, safely, to hunt for sport, for protecting their families, to think about whether your views are being properly represented by the organization that suggests it is speaking for you," he said.

Andrew Arulanandam, a spokesman for the N.R.A., chooses not to react to Mr. Obama, saying that it was the policy of the organization "not to comment until all the facts are known." Wayne LaPierre, the organization's executive vice president, confirmed after the school shootings in Newtown, Conn., "The only thing that stops a bad guy with a gun is a good guy with a gun."