perma-offended
A person who is in a permanent state of being offended because of {political correctness.} No matter what others say or do, they will find a reason to pounce on them for use of a word they don't like. The other party finds they have to walk on eggshells around them.
The guy who used the word niggardly to describe someone who is miserly and he was asked to leave his job by pressure from the perma-offended.