Illegal Chinese Police Stations: What are they?

Imagine where we have a police station that works on behalf of a foreign entity. Silencing prodemocracy U.S. residents on U.S. soil. I'm very happy that we do not allow such systems to persist within our country. I'm sure they would feel the same if we did the same. Any country and any people would not want these systems to exist. So this makes sense to close them down where we find them. 'Two Arrested for Operating Illegal Overseas Police Station of the Chinese Government'