That's not my point. You can't judge China's actions towards a situation that you don't face. It doesn't help that the US completely failed in their treatment of Native Americans. It's comfortable to believe that modern day America is more enlightened, but do you really think that's the case? Hundreds of thousands of people were killed during the war in Iraq, in the name of "national security." Technically, we didn't force anyone to do anything after Sadaam was captured, but we basically set up two sides to kill each other and feign suprise when they did. Imagine how we would react to an actual internal threat of national security.
Maybe you think you can do better. Let's say you had a chance to be Andrew Jackson in 1830, and you're facing an American Indian crisis in Georgia. You have two options. The first is to let history repeat itself with the Trail of Tears. The second is to let the settlers and natives duke it out. Ultimately, the settlers will win and Indians are drived out anyways, but thousands more are killed in the process. The two groups are too different to coexist peacefully, and you don't have the authority from stopping people from moving to Georgia. Which option do you choose? Either way, history would remember you as a terrible person.