This Day in History:, Columbine High School Massacre.<br />April 20th, 1999.<br />At 11:19 A.M., Dylan Klebold, 18, and <br />Eric Harris, 17, walked into their high school <br />and began opening fire on students and teachers.<br />Less than 20 minutes later, Klebold <br />and Harris had killed 12 of their classmates, <br />one teacher and had wounded 23 other people.<br />Less than an hour after they had <br />begun their rampage, the two died by <br />suicide after turning their guns on themselves.<br />The massacre in the Denver suburb <br />Littleton, CO, shook the nation and <br />made headlines around the world.<br />It sparked speculation on the teens' motive <br />and intensified debate on the contentious issue <br />of gun control that would continue for decades.<br />The methodical and planned-out rampage is <br />widely considered a turning point in the history <br />of school shootings in the United States
