Make all mass murders such as Cho and Holmes and the details of their crimes as classified to National Security of the Nation thereby not releasing the information to the press.
Why is this important?
Providing names, photos, details of massacres only spurs more crazy people into copy cat crimes. The crazy criminal could not afford ten seconds of air time, yet the media gives hours of time to them for free. The more heinous the massacre, the more time they get. It makes them into heroes to other sick minded individuals and gives them a blue print to improve upon.