April 20, 1999 - One of the worst school shootings in U.S. history occurs resulting in numerous gun laws and zero-tolerance school policies established. Newspaper headlines, nonstop media coverage, books, movies, songs, and even a video game were produced out of this tragic day. In this wiki, you will learn the TRUTH behind everything and why this happened. What seperates the information from this wiki and Dave Cullen's book is that real, actual common sense is used while Cullen's book is simply pointless details and assumptions. If you are looking for a factual source of information for a school report on Columbine, use this wiki.