Wayne LaPierre, the spokesman for the National Rifle Association, would have been better advised to remain wherever he had been hiding after the Newtown massacre, rather than appear at the news conference on Friday. No one seriously believed the N.R.A. when it said it would contribute something “meaningful” to the discussion about gun violence. The organization’s very existence is predicated on the nation being torn in half over guns. Still, we were stunned by Mr. LaPierre’s mendacious, delusional, almost deranged rant.

Mr. LaPierre looked wild-eyed at times as he said the killing was the fault of the media, songwriters and singers and the people who listen to them, movie and TV scriptwriters and the people who watch their work, advocates of gun control, video game makers and video game players.