As the free world has known for a long time, the charges against Lai were always a sham — notably because he has been accused of sedition simply for talking to politicians and other activists. If Hong Kong wants to retain any of its past democratic dignity, Lai should be freed immediately. Otherwise, the Beijing-controlled courts will show once and for all that this is simply about crushing any dissenting voices.
It's laughable that Western countries with similar — and even more vague — national security sedition laws are taking the moral high ground and claiming that this prosecution is politically motivated as if mainland China and Hong Kong weren't governed by the rule of law. There is no freedom in any country that allows bad actors to work directly with foreign powers against their homeland.