The irrational Twitter posts cited are useless and dangerous (when encouraging violence against gun owners and the NRA). What do they want done? Confiscate all the guns? Impossible with more than 200 million guns out there. We have over 300 million people in this country. If even less than 1% of them are mentally ill, that's a lot of people. Can psychiatrists identify the ones who might shoot up a place? Not likely. Lock up all the mentally deranged? Impossible. Who decides they're mentally deranged? If those irrational Twitter posters know how to stop these shootings, I want to know about it.