When the sun rose on the morning of the twentieth of April in the year 1999, it seemed like it was going to be just like any other Tuesday, but by the end of the day that turned out to be about as far from the truth as it could possibly be. That is because two seniors, Dylan Klebold and Eric Harris, arrived at Columbine High School in Littleton, Colorado, and made that small town a talking point for years to come when they began shooting at both their classmates and the staff members of their…