Police in Hong Kong carried out a sweeping operation against high-profile democracy campaigners on Saturday, arresting 15 activists on charges related to massive protests that rocked the Asian financial hub last year. Among those targeted was 72-year-old media tycoon Jimmy Lai, founder of anti-establishment newspaper Apple Daily, who was arrested at his home. The group also included former lawmakers Martin Lee, Margaret Ng, Albert Ho, Leung Kwok-hung, Au Nok-hin and current lawmaker Leung Yiu-chung.