This is more of a rant and not a question. But it looks like you may be writing this in a language you are less familiar with. I think you are French and meant to ask a question, not just make a statement.
Why are Chinese extremely hated in Canada and USA? They are not. I don't agree.
First, I would ask... How would I (a typical white Canadian) know that a person is Chinese? Many Asians come from Singapore, Thailand, Taiwan, Philippines, Korea, Malaysia... They are not Chinese but have a similar visible minority profile. So am I supposed to hate all these people in your eyes?
There are only two groups in Canada that in my view continue to face hatred and prejudice on a consistent basis.
First would be the First Nations people. 25% of the inmates in Canadian prisons are aboriginal, despite them being only about 4% of Canada's population. Does that mean they are more prone to violence and crime? Perhaps. But perhaps it's also the fact that the are not given the same opportunities as other groups, or they don't get the benefit of the doubt in many court/criminal cases.
Second group is Muslims. That is mainly due to the atmosphere in the world today, and with the violence associated to the Da'esh terrorists in Syria and elsewhere. Most people look at Muslims suspiciously, and that carries forward into prejudice.
As for me, I don't hate Chinese. I don't hate Muslims. What I do hate is bigots. To anyone who "hates" another race or religion just because it's different than you, I would suggest that you stop and learn more about that person, so you are not painting everyone with the same brush.