March 25, 2008, Sitka, Alaska: An 18 year[old] killed 4 people with a 5-inch knife. June 8, 2001, Osaka, Japan: A school janitor killed 8 children with a kitchen knife. July 1, 2008, Shanghai, China: A man stabbed 6 police officers to death and wounded 4 others with a knife. “According to the FBI’s...