Hong Kong (CNN)Hong Kong pro-democracy activist Chow Hang-tung was sentenced to 15 months in prison on Tuesday for her part in organizing an unauthorized vigil to commemorate the victims of the 1989 Tiananmen Square massacre.... ...Chow, a barrister, represented herself in court and pleaded not guilty to the charge, arguing that appealing to the public to light candles did not constitute "incitement." She also challenged the police prohibition order on the grounds it undermined her right to freedom of assembly and argued that she appealed for candles to be lit "anywhere" across Hong Kong, and was not encouraging a rally....