You are demonstrating your poor comprehension of what I assume, is your first language.Please calm down and write in intelligible English please.
It is absolute clear what Denso meant.
You said, "Yes, you do". You were referring to the necessity of being a racist to want to reduce immigration.
Denso said, "No you don't, nothing wrong with questioning things, it's when they are considered lesser people or haven't washed in a while when it crosses a line."
Denso was explaining, in plain English, that you do not have to be a racist to want a reduction in immigration.
But when you consider yourself to be superior, or assume that other races have not washed, is what determines you as a racist.
I hope that further explains what Denso has already explained to you in plain English.
If you have any further problem understanding plain English, I am sure others are also prepared to help with your comprehension.