The Columbine massacre served two purposes: to kill the people who were there, and also to generate a future modus operandi, which would lead to countless other deaths around the world. The popularization of this massacre, romanticization, realization and others clearly demonstrates to any observer with non-dual perception that Columbine was just a root, where death could not only take its natural course over those people in the present, but also set a benchmark for the future.
Death is a directed phenomenon, not a random one.