I think any non-Chinese person who wishes to bash China should not do so from within China.

People have the right to offend, insult, and humiliate the Chinese, whether it is inside China or outside of China is irrelevant.

It's not irrelevant. Click on the link below to see why:

https://thenanfang.com/us-teacher-deported-writing-text-message-critical-chinas-tibet-policies/

I have personally insulted and humiliated hundreds of Chinese people ( especially the women ) and I am proud of that, proud of intimidating them. [edited]. As they mostly deserved it I feel no guilt. It is freedom of speech.

The principle of freedom of speech applies to me too, and allows me to say what I said in the sentence in bold that I started this post with.