I think it’s because more people than leftists expected spent five minutes or so thinking about the situation and concluded that the only person responsible for the killings shot himself afterwards.
Don’t think for one minute that the Gov’t isn’t working day and night on a way to take control of all guns and ammo. This has been their mission for years. I light of the Sandy hook crisis (”Never let a crisis go to waste”), their iron is hot and it is time to strike. As I see it, it is a timing issue of “when” to strike. Our government is very handy at keeping things from the people and this is one time they are doing a good job of it. Don’t be too egar for the sh@@ to hit the fan, just be prpared.