China said on Thursday it had the right to bar people from Hong Kong, a day after a British activist was denied entry into the former British colony, and that it had complained to Britain after it demanded an explanation.
Hong Kong returned to Chinese rule in 1997 under a "one country, two systems" principle that promises it a high degree of autonomy and freedoms not enjoyed on the mainland.
But critics have accused the government of bending to the will of Communist Party leaders in Beijing and of a gradual watering down of the territory's freedoms, including freedom of speech and right to protest.
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