Chicago police fired on striking workers
When Chicago police fired on workers during a general strike for the eight hour day, killing several demonstrators and resulting in the deaths of several police officers, largely from friendly fire. May Day was formally recognized as an annual event in 1891.
Where was the Maguindanao massacre on 23 November 2009, when 58 victims, including a politician's wife, his two sisters, journalists, lawyers, aides, and motorists who were witnesses, were kidnapped and brutally killed?
What name was popularly given to the event on 6 December 1989 when Marc Lépine killed 14 women and injured 10 women and 4 men, now commemorated annually in Canada as the National Day of Remembrance and Action on Violence Against Women?
On 12 November 1991 pro-independence student demonstrators in Dili who were protesting the Indonesian occupation of East Timor were shot at by Indonesian forces, killing at least 250. Where were they at the time?