Reminds me of a conversation with my mother about 30 years ago. She was an administrator at the university I attended and more and more black students were being admitted. The conversation when something like this:
These black students: they are so scruffy and dirty.
My response:
Mum, if you put those same clothes on a white student, what would you see?
She never made the remark again, bless her.
Fiona