Driving is a privilege, firearms are a right. We already have "common sense" limits. Pretty much the only tiny concession I'm willing to make is background checks on private sales. As long as the process is quick, inexpensive, and the personal info destroyed post-check. I personally would like to know if the person I'm selling to is a felon, or mentally unstable individual.
I don't think every report I saw mentioned it, but certainly one or two I saw. In fairness, first reports were about the wrong person, that his mom was a teacher, that she was in the school, that there were multiple shooters. First moments notice info isn't necessarily something I'd cling to. Though the video footage that they surely must have, would squash any rumblings. It is at least curious we don't see any. No, before some asshole protests, not kids being shot, him entering the building, or walking through the lot.
I agree completely with the first part. Can't say I know for sure on the second.