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In this Sept. 16, 2019, photo, a man walks down a pedestrian stairway outside the government headquarters which is filled with anti-government graffiti written in English and Chinese, one line in Chinese reads " it is you who teach me peace is useless." As Hong Kong enters its fourth month of steady protests, the city is embracing for another violent weekend prior to the upcoming 70th National Day on Oct. 1. (AP Photo/ Vincent Yu)