The now-disbanded Hong Kong opposition party Demosisto was involved in a global advertising campaign to garner international support for the pro-democracy movement during the 2019 protests and unrest, the national security trial of media mogul Jimmy Lai has heard. Andy Li, one of the 12 Hong Kong fugitives caught by China’s coastguard in August 2020 while trying to flee to Taiwan, continued his testimony for the prosecution on Thursday. He has pleaded guilty to conspiring to collude with foreign forces under the Beijing-imposed national security law. For a second day Li made no mention of Lai,…