LITTLETON, CO - MARCH 22: A sign announcing spring break week for Columbine High School students is shown March 22, 2005 in Littleton, Colorado. Jeff Weise, a Red Lake High School student in Red Lake, Minnesota, shot and killed eight students prior to killing himself on March 21 at the Red Lake school, in the worst high school shooting since the 1999 Columbine massacre. Weise also allegedly murdered his grandfather and his grandfather's partner at their home prior to the school shooting. On April 20, 1999, Eric Harris and Dylan Klebold, two Columbine High School students, shot and killed 13 students while wounding many others prior to killing themselves. (Photo by Thomas Cooper/Getty Images)
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