Earlier this week, almost 2, 000 officers went on strike to demand better pay and working conditions.
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In 1984, the coal miners union of Arthur Scargill went on strike for nearly a year.
Merchants recently went on strike in several cities, including Tehran, over higher sales taxes.
When Philippine Airlines workers went on strike last year, he didn't side with labor.
Iberia pilots last year went on strike when Iberia created a low-cost carrier called Iberia Express.
In 2002 its workers went on strike to try to force him from office.
When UNRWA suspended a union leader for suspected Hamas activity, staff went on strike.
To complicate matters, the police briefly went on strike, and several unions called a one-day strike.
In Sri Lanka district and magistrate court judges went on strike for two days in protest.
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The drivers went on strike on Boxing Day in a long-running dispute over bank holiday pay, disrupting services.
On Wednesday, Palestinians went on strike across Gaza and the West Bank in protest at the Israeli raid.
Before 1995, Chicago teachers went on strike nine times in two decades, leaving the system in perpetual disarray.
Two years before that, workers went on strike, but were beaten, attacked, and shot with rubber bullets by police.
Those who went on strike have protested that they will have to work longer, pay more and get less.
Mali's private media went on strike for four days following Mr Daou's arrest.
But the union went on strike in protest, and Mr Fox caved in.
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Robertson says he got a "lucky break" when the miners went on strike.
Shopkeepers went on strike this week after a trader died while in the custody of tax officers in Faisalabad.
Drivers went on strike on 8 October for two days over the same proposed changes to terms and conditions.
The announcement comes after Tube drivers went on strike on Boxing Day in a row over bank holiday pay.
Large areas of southern India went on strike on Friday in protest at the possible removal of Rabri Devi's government.
But last week, drivers from the Rea Vaya bus company, which is run by the Johannesburg municipality, went on strike.
Both Thyssen and Krupp's workers went on strike and there was talk of a customer boycott of the two banks.
Centerra had a brief issue with its Kumtor mine, located in the Kyrgyz republic, when workers went on strike last month.
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High school and university students throughout Spain went on strike Tuesday, Wednesday and Thursday, their second three-day strike this school year.
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An estimated 1.5 million people went on strike on 30 November last year to protest over reforms to public sector pensions.
This idea alarmed the company's North American workers, who recently went on strike partly to protest about the threat to jobs.
Kingfisher, once India's most luxurious airline, cancelled all its flights since Oct. 1, 2012, after its employees went on strike over pay.
Binmen went on strike over pay and allowances last Wednesday and Thursday.
His workers, immigrant women armed with sharp tomato knives, went on strike.
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