They are called secret police centres in Canada because of the actions they pose, and the threats they make. They'll threaten to kidnap you and extrajudicially extradite you to China, they'll threaten your relatives in China, they'll force you to stop behaviours considered inappropriate by the CCP, they'll try to recruit you as a spy.

To the Chinese Communist Party, the Han ethnic group belongs to the Chinese State, and everything anyone of this ethnic background does is their business.