Classic case
How it started according to american wiki:
"Before the primaries were held,
warned that they might violate the new Beijing-imposed national security law, specifically its clauses prohibiting secession, subversion and collusion with foreign powers. Benny Tai refuted the claim by saying such advocacy work was in accordance with the principles of the
. He added that vetoing the budget would not constitute "seriously interfering in, disrupting, or undermining the performance of duties and functions" of the government under Article 22 of the new law because the chief executive has the power to dismiss the legislature and call a by-election."
How it ended: