The chinese red army had staged riots in Tibet 1. To taint the legitimate Tibetan free nation movement and the Dalai Lama 2. To divide the Tibetan independence movement and assasinate Dalai Lama (blaming the younger Tibetan dissidents) 3. As a pretext to send more troops into Tibet and its borders with India (Aksai Chin and Arunachal Pradesh), Nepal and Bhutan 4. Complete the Olympics, declare itself a world power and then attack India (soft target) illegally occupy Arunachal Pradesh and other regions as extensions of Tibet and sen a clear signal to Taiwan and Xinjiang 4. Renegotiate boundary by claiming other Indian areas as having links with Tibet.
Indian governmnt is silent since China has promised return a part of Aksai Chin in exchange for Arunachal Pradesh. Our babus and politicians have been bribed enough to agree to this solution. They are just getting the Indian public ready with statements that Arunachal is part of China.