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In this Sept. 21, 2019, photo, an overpass in Causeway Bay is filled with torn scraps of anti-government posters put up by protesters in Hong Kong. Causeway Bay is one of the major arteries of Hong Kong and the site of multiple crashes between protesters and police. 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)