The What Ifs of the Florida school shooting

There are a lot of "what ifs" in the Plantland high school shooting. What if the shooter had been black--people would said he was responding to racism. Blame Trump. What if the shooter had been Muslim--people would have said he was responding to anti-Islamic hate. Blame Trump. What if he'd been LGBTQ--people would have said he was bullied. Blame Trump. What if there had been no "gun free zone" and the school guards had been armed and changing their route every day? Perhaps no shooting, or authorities could have been called before the fact. Tiny mention on news.