1999年4月20日，两名学生，18岁的埃里克-哈里斯和17岁的迪伦-克莱伯德，走进丹佛郊区的一所高中，开始疯狂射击。 在他们对科伦拜恩高中的49分钟大屠杀中，他们射杀了12名同学和一名教师，随后自杀。 哈里斯和克莱伯德的射击是一个明显更大的 "恐怖主义 "阴谋的一部分，其中包括自制炸弹，要在学校内杀死多达500人。
包括哈里斯和克莱伯德在内的10名学生被发现死在学校的图书馆里，一名教师在教室里死于枪伤，还有两名学生被发现在学校外面，另外至少有20名学生在试图逃跑时受伤。 科伦拜恩枪击案是美国历史上迄今为止最致命的高中枪击案记录。 这场高中屠杀引发了一场关于枪支管制改革的辩论，其中包括枪支的可用性和涉及年轻人的枪支暴力问题。
John Williams is a seasoned artist, writer, and art educator. He earned his Bachelor of Fine Arts degree from Pratt Institute in New York City and later pursued his Master of Fine Arts degree at Yale University. For over a decade, he has taught art to students of all ages in various educational settings. Williams has exhibited his artwork in galleries across the United States and has received several awards and grants for his creative work. In addition to his artistic pursuits, Williams also writes about art-related topics and teaches workshops on art history and theory. He is passionate about encouraging others to express themselves through art and believes that everyone has the capacity for creativity.