FILE - In this file photo taken Sunday, July 21, 2019, medical workers help a protester in pain from tear gas fired by policemen on a street in Hong Kong. The former British colony of Hong Kong was returned to China in 1997 under a “one country, two systems” concept that gives the city a fair degree of autonomy over its affairs, but China may intervene to quell protests now in their seventh week. (AP Photo/Bobby Yip, File)
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