Australia is deeply involved in this. China are actively trying to control conversation with Chinese students and immigrants here. The govt has literally bought all Chinese language press and semi regularly run full page 'articles' in the major press. They have been caught out several time pressuring universities and placing disruptive people in lectures that discuss areas they don't want. I believed agents recently were found to have broken into lectures houses.
Its a delicate situation and hopefully the government will not be afraid to deal with it, whilst not turning it into a xenophobic support point.