The US is an outlier both in terms of gun ownership and in terms of these regular massacres. It’s pretty obvious that as long as there is no willingness to curtail the former, the latter will continue to be a risk. And quite obviously the concept of performing these atrocities is spreading a bit like a ‘fashion’ amongst those susceptible.

It’ll make the libertarians bristle but more guns obviously does not make the environment safer.

Switzerland has long outlawed gun ownership, and has zero school shootings.

yeah. make it illegal to own a gun...pretty simple solution and already proved to work in other countries....it's a no brainer