Like everyone, and I'd say especially like every parent, I am of course saddened and horrified by the latest mass shooting-murder. My sympathies to all.
And of course the additional sad, horrifying, and appalling point is the shared American knowledge that, beyond any doubt, this will happen again, and that it will happen in America many, many times before it occurs anywhere else.
Recently I visited the site of the "Port Arthur Massacre," in Tasmania, where in 1996 a disturbed young man shot and killed 35 people and wounded 23 more. The site is a kind of national shrine; afterwards, Australia tightened up its gun laws, and there has been nothing remotely comparable in all the years since. In contrast: not long after that shooting, during my incarnation as news-magazine editor, I dispatched reporters to cover then-shocking schoolyard mass shootings in West Paducah, Kentucky, and Jonesboro, Arkansas. Those two episodes, coming back to back, were -- as always -- supposed to provoke a "national discussion" about guns and gun violence. As always, they didn't; a while later they were nudged from the national consciousness by Columbine; and since then we have had so many schoolyard- or public-place shootings that those two are barely mentioned.