There is reference to his being white. What is the ethnic background of the principal? How about the make up of the school? In any case, that Soviet style language of forcing the kid to confess sounds scary.
Can you imagine the outcry that would be going on now if this were a muslim kid accused? Even if was GUILTY there would be demands for his release and that he be given light punishment.
In answer to your first question, lily white liberal. To your second, about 10% including my daughter if part Asian counts as an ethnic minority.