Are rampage killings something to actually worry about in the grand scheme of things? They’re dramatic when they happen, but you’re also more likely to slip in the bathtub and die than get killed by a crazed gunman.
Not a new phenomenon either — I recall it was called “going postal” in the 80s and 90s.
The solution? Stop giving the crazies free publicity. Yeah, they can still use the Internet to spread their poison, but a gentleman’s agreement among the mainstream media not to spend days publicizing their actions would go a long way to discourage copycats.