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

HONG KONG—Thousands of protesters, unbowed by a sweeping new countrywide-stability regulation imposed by China, staged the most significant exhibit of defiance in Hong Kong this year, with some jeopardizing heavy jail terms to chant slogans of liberation and demand from customers independence.

Hundreds of Hong Kong police officers moved in quickly to quash dissent and implement the regulation, which presents Beijing a great deal bigger powers to police the metropolis and punish people accused of subversion and supporting separatism. Police fired tear gasoline, pepper spray and h2o cannons…