A protester scuffles with police officers outside the venue of a dinner party held by Taipei Mayor Ke Wen-je for Sha Hailin, head of the United Front Work Department of Chinese Communist Party’s Shanghai Municipal Committee, on the eve of Taipei-Shanghai forum in Taipei, Taiwan, Monday, Aug. 22, 2016. The Chinese envoy arrived in Taiwan on Monday for a city-to-city dialogue, amid a chill in relations between the sides following the inauguration of the island’s independence-leaning president, Tsai ing-wen, in June. (AP Photo/ Chiang Ying-ying)