Yep, and thinking about that some more, I have to wonder if he might be suffering from early/mild signs of schizophrenia. The assumption of racism is unjustified paranoia.
When schizophrenia starts, it is common to assume that people's actions are in some way plotting against you. A person does something for a reason unrelated to you (example: bumps you accidentally), and you assume it was intentional.
I recall that there is even an increased chance of illness for math experts. Famously, it hit John Nash.
So his interpretation of other people's actions may be a sign that he is not well.
When schizophrenia starts, it is common to assume that people's actions are in some way plotting against you. A person does something for a reason unrelated to you (example: bumps you accidentally), and you assume it was intentional.
I recall that there is even an increased chance of illness for math experts. Famously, it hit John Nash.
So his interpretation of other people's actions may be a sign that he is not well.