I’m simply replying to your comment that America do in fact enact policies to further its own political goals all the time. In fact the US is a frequent offender of doing so to influce foreign countries while at least China usually focuses on itself.
If you meant just the American people, well not all Chinese side with China on the Tibet issue, but most do. But then that’s personal opinions and you can’t really blame them for having a personal opinion.
Using political leverage to force an outcome is inevitable, and frankly, discussing right or wrong on the matter is pointless as you cannot ever achieve politically neutral policy. All policy is enacted with a certain goal so it cannot be neutral by definition (unless your policy does nothing).
Either China wants Tibet as part of its territory or it doesn’t. In either case it will use its political powers to further whatever the goal is.
(Why bring up US foreign policy again? Many don't agree with those decisions either and it's unrelated.)