Protesters take to the streets of Hong Kong during an unauthorised demonstration against the new national security protection law.
The full details of the law remained unknown until after it was passed by the parliament's Standing Committee and enacted by China's President Xi Jinping on Tuesday. The law took effect symbolically on the eve of Hong Kong's annual holiday marking the handover of the former UK colony to Beijing; while united with China, it retained special administrative status under an 1984 UK-Chinese agreement.
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