Veteran human rights lawyer Michael Vidler decided it was too dangerous to work in Hong Kong the moment a judge designated to handle national security law cases implied offering legal support to democracy activists could be a crime.

Judge Stanley Chan cited a contact card naming two law firms, including Vidler’s, as evidence of how organized the 2019 anti-government camp was in his judgment for an unlawful assembly conviction earlier this year. As to whether the lawyers named were "accomplices” to that crime, Chan said he couldn’t comment.

"It was deeply disturbing for me as a lawyer to be, in essence, accused of inciting a crime because a potential client had a piece of paper on him which listed my firm as a source of legal advice and assistance,” said Vidler, who previously defended now-jailed democracy activist Joshua Wong and won a landmark appeal that recognized spousal visas for same sex couples.