The Dalai Lama has not called for a boycott, but -- on the contrary -- would like the games to take place. The temporary influx of foreigners, even for so short a period, would probably pump some spiritual oxygen into the situation.
The world has contributed to Chinese hegemony by economic mismanagemnt on lots of different levels from that of heads of state -- Bush and Chirac to name only two -- all the way down to the individual consumers who take out the over-sized loan so that they can have an extra bathroom and a couple more bedrooms in a house which is already twice as much space as they really need.
It' all connected one way or another. Inversely, were western nations to mop up the economic mess, were heads of state to manage resources better, were consumers to spend more judiciously, a win-win situation with China could be created. In that case the regime would progressively mellow through postive contact with other cultures.
Before closing, I'd simply like to say that China,which has many faults, is one of the few nations which have done something for the problem of overpopulation. The Chinese evidently don't feel that they have to preach at the American right-to-lifers who are willing to march in the street for their convictions but far less likely to help over-subscribed families with child-care.