LONDON — The monks who marched through Lhasa on March 10 to mark the anniversary of the Tibetan uprising against Chinese rule in 1959 did not want to wreck China's Olympic year, but they knew that Chinese troops would be less likely to shoot them this year than most. And so it proved: the monks were arrested, but the crowds of Tibetans who gathered on the following days to demand their release were not harmed.

The dilemma facing the Chinese troops was that if they didn't shoot, the crowds would inevitably grow bigger, for most Tibetans dream of independence and fear that the mass immigration of Han Chinese to Tibet is a form of cultural genocide. By Friday, March 14, the crowds had become so bold that it was they who turned to violence, attacking Chinese civilians in Lhasa and looting and burning Chinese-owned shops, banks and hotels.

The Chinese news agency Xinhua says that 10 people were killed in Lhasa on Friday. The Tibetan government-in-exile says that 80 were killed, and accounts by foreign tourists in Lhasa support the higher figure. But so far, by most accounts, the victims have mostly been Han Chinese settlers killed by angry Tibetans.