A Hong Kong court has convicted media tycoon Jimmy Lai and two other prominent pro-democracy activists for their roles in a banned vigil to commemorate the 1989 Tiananmen Square massacre. The judge also found barrister Chow Hang-Tung and former reporter Gwyneth Ho guilty of either taking part or inciting others to join the event last year. All three pleaded not guilty. Rights group Amnesty International said the convictions were an 'egregious attack on the rights to freedom of expression and assembly'.