Ebony and Ivory
Pianos are clearly offensive, beause there are more white keys then black, and both colours are racist anyway. All pianos must be repainted blue. Light blue keys in the front, and dark blue keys in between...
I'm guessing every non English language must be clensed from every word that sensetive English speaking people find offensive.
As a suggestion, it might be easier to cleanse sensetive people, by de-sensitising them...