More than 500 people were arrested in a Hong Kong police crackdown on illegal gambling, a workshop that forged identity cards and employment documents and two non-Chinese gangs, the force said on Sunday. Police added a total of 511 people were arrested after raids disrupted three illegal gambling operations backed by triads, a forger and two rival syndicates. Police seized fake Hong Kong ID cards, green cards, black market cigarettes, alcohol, drugs and counterfeit designer goods in series of operations