The performance of the Tibetans in the opening ceremony, I believe, is a belittling of their culture if you only identify Tibetans as singing and dancing. I've been to Tibet and I never saw anybody singing and dancing. I saw them praying.
And when the Chinese government has been removing pictures of the Dalai Lama that are very precious to these monks and throwing them on the ground in the temple courtyards and wanting the monks to denounce the Dalai Lama as a beast, I feel this is an outrage against their culture.