Yes, I personally know many of the 47 who were prosecuted under the national security legislation on suspicion of suppression of state simply because of their participation in the democratic primaries in Hong Kong. I even campaigned for one of the candidates. Obviously, because they're behind bars right now and also because of the risk posed by the national security legislation in Hong Kong, I can no longer keep in touch with them, because that would further lead them to being charged with, potentially, colluding with foreign forces or other serious criminal offences under the national security law.
On May 4th, 2021. See this statement in context.