The Santa Fe High School shooting , in which ten people were killed , strongly resembled the Columbine massacre ; the perpetrator , Dimitrios Pagourtzis , used a pump-action shotgun and homemade explosives , wore similar clothing as Harris and Klebold ( including a black trench coat and combat boots ) and reportedly yelled " Surprise ! " to a victim during the shooting , a possible reference to the library massacre at Columbine ( Eric Harris famously said " peek-a-boo " to victim Cassie Bernall before killing her ) . The Kerch Polytechnic College massacre also appears to have been directly inspired by Columbine
Santa Fe High School shooting
Santa Fe High School shooting
Eric Harris and Dylan Klebold