There are probably many, many parallel universes where Columbine didn't occur at all. Just like the sinking of the Titanic, Columbine was a confluence of many, many individual situations and occurrences, which, if even ONE was different, would have changed EVERYTHING.
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"I will have a love, someone who is me in a way. Someday ... possibly thru this life, maybe another, but it will happen..." --DK, The Book of Existences
“Despair is the price one pays for self-awareness. Look deeply into life, and you'll always find despair.” -- Irvin D. Yalom, MD