In reply to TarlSS, If History is to be any guide, it would show that successful grassroots protests and passive resistance is the exception rather than the rule. History seems to show that lands are conquered, peoples subjugated and nations made thus. Revolutions, coup-detats and rebellions split and form new nations. Most of the world was made that way, and the Chinese "occupation" of Tibet is just that.
The rest of the world will do well to look back at parts of their country which they took by force, which now seems inseparable.
China was not persuaded by the humanity of liberty to become what it is, but cold hard economic necessity. TarlSS is right about Chinese infrastructure in Tibet, but in recent times, Tibetans have come to see it as more of a neo-colonial apparatus bringing in non-Tibetan peoples who dominate the local economies, while they live in comparative poverty. This was a major reason for the recent riots where non-Tibetan business owners have been the target of mob violence.
The anti religious aspect of the PRC is overplayed and China is not anti-religious for atheisms sake. Religious movements as pervasive as Tibetan Buddhism is seen to be, a threat to the integrity of the nation, as separatist movements have always been based around the exiled Lamas, who were ousted from power by the communists. Couple that with culturally insensitive officials looking to reduce the influence of the exiled buddhists and you get something that looks like an atheist inquisition.
People seem to think China is simply "being mean and oppressive" to Tibetans. This is not the case. China is equally mean and oppressive to all those who are poor, and Tibetans, being poor, unsurprisingly get shafted, which western hypocrites then go on to say is the result of the "occupation" and FREE TIBET!!FREE TIBET!! bullshit.
Tibet is part of China. China is not free, therefore Tibet is not free. All that FREE TIBET!! idiocy is based on the idea that slogan shouting can win the freedom of a million people, whereas a free Tibet really requires that a billion be freed, something the banner wavers aren't so optimistic on.
If someone were to carefully consider the precedent set by a "liberated Tibet", it would give momentum to the Xinjang separatist movements in the west, then the mongolians in the north and before you know it, China is split into a dozen small squabbling states. In this perspective, you can see why China will fight tooth and claw to keep Tibet, boycotts, embargoes and wars be damned.
End of rant