This is really just astounding to me. There are roughly 4 million NRA members, and tens of millions of gun owners in America. A few thousand tweets, then, is something like 1 in 1,000 NRA members (who are more conservative than the typical gun owner) and 1 in 10,000 gun owners. Still, there's no similar level of impeachment outcry when the President proposes raising taxes, or supports gay marriage, or grants some form of citizenship or relief to illegal immigrants.
So what is it that makes guns so special? Why are the most zealous defenders of gun ownership so much more zealous than the most zealous defenders of gay rights, to the point of demanding the impeachment of a President who proposes a series of measures to reduce gun violence, none of which confiscate existing firearms nor impede the ability of law-abiding citizens to acquire more firearms?