List of mass stabbing incidents (before 2010)
Wikimedia list article

This is a list of mass stabbings that took place before 2010. It includes incidents in which there were at least three casualties (killed or injured).
1920s
Kitale, Kenya Colony (1929)
1930s
RMS Empress of Canada (1931)
On 5 June 1931, 42-year-old plantation laborer Graciano Bilas killed two people and injured 29 others at several locations aboard the Empress of Canada in the Pacific Ocean, off the eastern coast of Japan. Bilas, a Filipino migrant worker in Hawaii, was tried in Hong Kong the same month, charged only with the killing of one victim, Chinese crew member Chan Yue. He claimed that Japanese ship staff had planned to kill him, with doctors ascribing a manic depressive psychosis to Bilas based on other behaviour displayed after the attack. In July, Bilas was found insane and committed to a psychiatric hospital.
1950s
Nainital, India (1950)
On 21 April 1950, a drunk Gurkha soldier stabbed 22 guests at a wedding in Nainital, India, all of them apparently fatally. The man, who was armed with a machete, was enraged by a low caste money lender marrying a girl of the higher social standing Brahmin caste. All of the victims were members of the Harijan caste.
Kampala, Uganda (1950)
Skåne County, Sweden (1952)
On 21 August 1952, 25-year-old Tore Hedin killed nine people around Skåne County, Sweden, after his ex-girlfriend, Ulla Östberg, reported him for domestic abuse.
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