Can anybody tell me the truth about slavery in old tibet?

Question

I follow Tibetan Buddhism and have seen a website that says that the dalai lama had slaves in Tibet and their Skin was Peeled off, Organs ripped out, etc...
I want to know if this is true, also i was told that the Temple Drums Were made from Slave Skin.
It was a Chinese website and i suspect that it is full of chinese communist lies, what does everybody think?

http://english.peopledaily.com.cn/english/200105/14/eng20010514_69868.html

http://www.youtube.com/watch?v=2I2bvs3uZ4c

Answer 1

The Chinese government says all kind of nonsense about the Dalai Lama.