A prominent blogger and environmental activist inVietnam was sentenced last week to 10 years in prison on charges of national security offenses, including sharing anti-state propaganda on social media. Nguyen Ngoc Nhu Quynh, better known by her online handle Mother Mushroom, had been held incommunicado since she was arrested in October, and attendance at her trial was strictly controlled. But barely one hour after the verdict was handed down on Thursday, one of Ms. Quynh’s lawyers summarized his arguments and posted her final statement at the trial to his 61,000 Facebook followers.