Unions and students in Hong Kong and Canton strike-boycott against British imperial rule, 1925-1926
In a shooting incident on May 30, 1925, Sikh police under British command opened fire on Chinese protestors in the International Settlement of Shanghai, killing nine demonstrators and wounding many others. News of the incident spread across China, triggering an outburst of nationalism and prompting protests all over, but especially in Shanghai and Canton (Guangzhou) – two cities with concentrated British interests.