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28 September 2014, when the Hong Kong police decided to employ tear gas against peaceful protesters. <unk> 28 September 2014, when the Hong Kong police decided to employ tear gas against peaceful protesters. <unk> 28 September 2014, when the Hong Kong police decided to employ tear gas against peaceful protesters. The use of teargas by the police brought hundreds of thousands of people to the area.<unk> The use of teargas by the police brought hundreds of thousands of people to the area.<unk>