The NRA's Facebook milestone. NRA The day before the Newtown, Conn., elementary school massacre the National Rifle Association celebrated a milestone: It had accumulated 1.7 million fans on Facebook. It even tweeted a joyful graphic (at right).

A day after the killings, however, the NRA's Facebook went missing in action. It cannot be found on the social network. The disappearance was first noted on the USA Carry pro-gun bulletin board.

The move occurred at the same time as the NRA's Twitter stream went silent -- and suffered a barrage of whithering tweets from critics.

The guns in the massacre -- two handguns and an assault rifle -- were legally obtained.