We could know more with the cooperation of China in the TAR, but they won’t let foreign observers in. Later in the same Wikipedia article:
> American sinologist Allen Carlson is of the opinion that it is nearly impossible, without substantial field research in Tibet, to verify the numerous allegations of violations advanced by China critics. He does, however, state, "my analysis of Beijing’s policies and practices has left me with the impression that the Chinese leadership has no reservations about using whatever means necessary to secure Chinese rule over Tibet."
> According to Amnesty International "The Chinese authorities have turned down as “inconvenient” requests for visits to the TAR by several UN human rights experts."
