The terminology " active shooter " is critiqued by some academics . There have been several mass stabbings that have high casualty counts , for instance in Belgium ( Dendermonde nursery attack ) , Canada ( 2014 Calgary stabbing ) , China ( 2008 Beijing Drum Tower stabbings ) , Japan ( Osaka School Massacre and Sagamihara stabbings ) , and Pennsylvania ( Franklin Regional High School stabbing ) . Ron Borsch recommends the phrase " rapid mass murder " . Due to a worldwide increase in firearm and non-firearm based Mass Casualty Attacks ( including attacks with vehicles , explosives , incendiary devices , stabbings , slashing , acid attacks ) , Dr. Tau Braun and the Violence Prevention Agency ( VPA ) has encouraged the use of the more accurate descriptor Mass Casualty Attacker ( MCA )
Franklin Regional High School stabbing
Franklin Regional High School stabbing
Active shooter