Columbine High School massacre Potential Students") program. He found the transition to Ken Caryl Middle School difficult. Unlike the white caps of the jocks, Harris and Klebold wore black baseball caps. As was typical in the 1990s, they wore them backwards. Harris wore a KMFDM cap, and apparently did not wear it during the massacre. Klebold's cap had a Colorado Avalanche logo on the front and a Boston Red Sox logo sewn onto the back. Following the Columbine shooting, schools across the United States instituted new security measures such as see-through backpacks, metal detectors, school uniforms, and security guards. Some schools implemented school door
Columbine High School massacre wrongful death suit against the Harrises and Klebolds. In 2000, youth advocate Melissa Helmbrecht organized a remembrance event in Denver featuring two surviving students, called "A Call to Hope." The library where most of the massacre took place was removed and replaced with an atrium. In 2001, a new library, the HOPE memorial library, was built next to the west entrance. On February 26, 2004, thousands of pieces of evidence from the massacre were put on display at the Jeffco fairgrounds in Golden. A permanent memorial "to honor and remember the victims of the April 20, 1999 shootings at Columbine