"I can remember an expression used when talking about a hypocritical person as 'The pot calling the kettle black' which now thinking about it could be thought of as being a little bit tinged with racism."

Arrant nonsense, and typical of the perverted thought-processes of the PC-Fruitcake Brigade, who seek to find 'offence' anywhere and everywhere, and when none is found, they invent something anyway.

FFS, the reference is to the blackening of the bottom of cooking utensils in use, especially in years past where they would have been used over an open fire or in an oven heated by a wood- or coal-burning fire or stove. WTF has that got to do with racism?