I personally have never had any problems with the Chinese; however if you read world guides, they come across as the worst tourists. Regarded as rude and selfish.
The Chinese government must train these people how to interact with foreigners.
Chinese people who are 40, maybe even 35 and above are pretty uneducated. They are the ones foreigners usually complain about as tourists and they have zero self awareness. The younger generations, especially 20-25 are a lot more educated and learn to act more politely when they go overseas. They grew up in a much wealthier country and probably act more like the Japanese than the older generations of Chinese.
Overall, Chinese people are pretty clueless when it comes to interacting with foreign people though because they come from a very homogeneous society. You can pretty much see it on this board with the awkward communication skills of the Mainland Chinese here, whether it is defending the Uighur detention camps or when they turn every issue into a bashing of India regardless of whether it has to do with India or anything Indians have said, or even when they express their friendship to Pakistanis, it all comes out very awkward and unnatural. They have zero awareness and understanding to really relate to foreigners in a natural way.
I don't know what really happened to cause the conflict, it might have been just as much the fault of the Bangladeshi, but China should really stop sending huge amounts of its workers overseas.