On the one hand, lots of people have predicted that only a series of Paris-style terror attacks on US soil would ever allow Trump to be elected.
On the other, speaking as a USian, Americans were perfectly fine with 25 toddlers getting shot in the face a few years back. Literally nothing changed in the wake of Sandy Hook.
So as awful as it sounds, over 50 dead in Orlando will likewise be shrugged off as simply the annual (weekly?) blood tax Americans pay so gun-nuts can keep their death contraptions and stroke their freedom hard-ons.