Protesters extinguish tear gas canisters during clashes with riot police outside Polytechnic University, in Hung Hom on November 17. Photo: Winson Wong

Hong Kong protests, police and tear gas: time to clear the air on toxic facts

  • Government environment officials routinely collect samples to assess air quality. They must now do so in areas affected by tear gas and report on their findings
  • If not, green groups have an ethical duty to perform this urgent public service
Topic |   Hong Kong protests

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Protesters extinguish tear gas canisters during clashes with riot police outside Polytechnic University, in Hung Hom on November 17. Photo: Winson Wong
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Tear gas fired during clashes between anti-government protesters and anti-riot police at the junction of Nathan Road and Argyle Street in Mong Kok on October 27. Photo: Sam Tsang

Is tear gas in Hong Kong making polluted city take a toxic turn?

  • Repeated use of tear gas by police in almost every district has exposed even children, the pregnant and the elderly to a complex mix of harmful chemicals. This raises deep concerns with regard to public health
Topic |   Hong Kong protests

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Tear gas fired during clashes between anti-government protesters and anti-riot police at the junction of Nathan Road and Argyle Street in Mong Kok on October 27. Photo: Sam Tsang
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