If you keep posting such common sense on here about Brexit, I am afraid that I will have no alternative but to report you to the mods for immediate banning.
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Do you not think that this is just that shade simplistic? I strongly suspect that the strains are due to many factors, two of which you mention. Its no wonder you see racism everywhere, when you are so determined to view matters in such a narrow manner.
Yes, they tend to be called racist by the kind of people determined to see racism behind every bush, and simply want to interpret even the most innocent of remarks as racism.