On April 20, 1999, there was the high school tragedy in the United States. The school was Columbine High School in the state of Colorado (I can't remember which city is that school). About 15 people (12 students, 2 student gun shooters and 1 teacher) in that school were killed, including Rachel Joy Scott, which she worked there. What do you think about Columbine High School tragedy and Rachel Scott? Does anyone remember?