Hong Kong’s controversial new national security law taking force on July 1, scenes once unimaginable in the financial hub have nightmarishly come true: a 15-year-old girl arrested for waving an independence flag; books potentially offensive to China’s Communist Party removed from public libraries; protesters, fearing life imprisonment for wielding slogans, holding up blank sheets of paper — but getting detained anyway.By imposing the law, Beijing is forcibly and abruptly moving its Great