This social-media blackout after a mass shooting is not unprecedented for the NRA. The gun lobby didn't tweet for 10 days last July following the fatal shooting of 12 people in an Aurora, Colorado, movie theater.

CNN: After Newtown, the NRA goes silent

Also, they can't liveblog or tweet during their meeting.

CNN: Brandon Griggs,

While social media apps were preprogrammed into the buttons, I wouldn't recommend trying to Facebook or tweet on it while gaming on the big screen.

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