It's not because they are the same ethnicity... It's because they were potentially brought up with very similar values and culture, and that shared background can manifest itself as similar attitudes to the behavior of their government. Notice how this is not even remotely controversial or racial, but because you have already decided what to believe on this politically loaded topic, you will blow your whistle and signal your virtues.

The Chinese government is known to own the media and pump worldwide propaganda to its citizens and ex-citizens living abroad. These are facts, and they are only related to race because they apply to Chinese people. Please stop with the bullshit. It's embarrassing.