Hong Kong Police Quickly Enforce China’s Security Law as Thousands Protest

HONG KONG—Thousands of protesters, unbowed by a sweeping new countrywide-security law imposed by China, staged the greatest demonstrate of defiance in Hong Kong this 12 months, with some risking large jail terms to chant slogans of liberation and demand independence.

Hundreds of Hong Kong police officers moved in swiftly to quash dissent and apply the law, which provides Beijing a great deal better powers to police the town and punish those accused of subversion and supporting separatism. Law enforcement fired tear gasoline, pepper spray and h2o cannons…