But with very few exceptions , China has banned Hong Kong 's pro-democracy politicians from crossing the border ever since June 4 , 1989 , when many of them outspokenly denounced the Chinese Communist Party for the Tiananmen Square killings .
Hong Kong /location/administrative_division/country China
China /location/country/administrative_divisions Hong Kong
China /location/location/contains Hong Kong
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China
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Hong Kong
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China
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