<p>HONG KONG (AP) — Hong Kong pro-democracy activist and media tycoon Jimmy Lai has been charged under the city’s national security law as authorities step up a crackdown on dissent, local media reported.</p><p>Lai, who founded the Apple Daily tabloid, was charged on suspicion of colluding with foreign forces and endangering national security, local broadcaster TVB reported Friday. He is the most high-profile person out of more than two dozen charged under the sweeping law since it was imposed by Beijing in June.</p>