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State mask mandates to address COVID-19 have been complicated by anti-mask measures often dating back to the 19th century. | USAPP
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Anti-mask law targeting Hong Kong protesters could come into force by midnight on Friday, as government considers invoking emergency powers | South China Morning Post
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A protester wears a mask during the demonstration. Protesters went out to demonstrate against the Anti-mask Law. Hong Kong's chief executive Carrie Lam invoked the use of the Emergency Regulations Ordinance (ERO)
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