Denying rights is the easiest of all political endeavors. A group of well armed enforcers can crush an unarmed population in a matter of days. This isn't just easy, it is the standard the world over. You sit in a perceived freedom under the yoke of a massive Authoritarian government with a huge army and the only thing standing between you and a massive crackdown is the US Military who, under current leadership, is about as likely to come to your aid as they are Ukraine... meaning not at all.
You really have no idea how precarious Hong Kong's position is. I wish you the best of luck.