Hongkong is not a normal tourist place anymore. As tourist to visit China, it's absolutely ok. Just like some people also go to Cambodia, Burma, Gaza, Afghanistan, Africa, North Korea, Russia. However, over 150 hong kong people, some are legislative council member, lawyers, professors, students in university were taken into prison without trial for over 3 years and continue on. They didn't hurt or damage anything, just because of their thoughts are against China. Over 6000 hong kong people are on bail or to be kept in prison over 5 years for violation of national security laws and in foreseeable future, in such case, they will not be allowed to travel out of Hongkong for over 5 years or even decades.