You're proving my point. He wasn't "supportive of school shootings" he explicitly called them unfortunate and argued they're a cost of preserving a constitutional right, just like society accepts risks that come with other freedoms. You can disagree with that argument all day long, but twisting it into "he supports school shootings" is either a misunderstanding or a deliberate misrepresentation of what he actually said. If we're going to criticize someone's position, we should criticize what they actually believe, not a caricature of it.