A police officer raises a purple banner warning protesters in Causeway Bay on October 1 that they might be violating the national security law, which took effect just before midnight on July 1. Photo: Sam Tsang A police officer raises a purple banner warning protesters in Causeway Bay on October 1 that they might be violating the national security law, which took effect just before midnight on July 1. Photo: Sam Tsang
A police officer raises a purple banner warning protesters in Causeway Bay on October 1 that they might be violating the national security law, which took effect just before midnight on July 1. Photo: Sam Tsang

Letters | Hong Kong police hotline reminds of China’s Cultural Revolution purges

Topic |   Hong Kong national security law (NSL)
A police officer raises a purple banner warning protesters in Causeway Bay on October 1 that they might be violating the national security law, which took effect just before midnight on July 1. Photo: Sam Tsang A police officer raises a purple banner warning protesters in Causeway Bay on October 1 that they might be violating the national security law, which took effect just before midnight on July 1. Photo: Sam Tsang
A police officer raises a purple banner warning protesters in Causeway Bay on October 1 that they might be violating the national security law, which took effect just before midnight on July 1. Photo: Sam Tsang
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