score:10
Although interested parties disagree in very fundamental questions, it seems that both of them agree in that it was an uprising. Tibetans in exile commemorate it in the Tibetan Uprising Day, the Dalai Lama refers to it as uprising, and for the Chinese government it was a reactionary uprising of the Tibetan elite (according to Wikipedia).
World history in the last century is full of incidents where the opposing parties extensively argued about if those were uprisings, peaceful demonstrations, peace-keeping operations, banditry acts, or anything else, and even nowadays there is an ongoing trial whose main point of contention is if a given event was an uprising or it wasn't. However, about the 1959 Tibetan uprising everybody involved says it was an uprising. Whether that uprising or its suppression were legitimated is another question without any agreed answer in the foreseeable future.