At my first job, we had two single-room washrooms. Each contained one
toilet and one sink; there were no stalls, just one locking door opening
onto the hallway. Although they were both identical, one was labelled men's
and one was labelled women's. Since both washrooms were completely
accessible, they both had that wheelchair icon on the door.

One day, a lady asked where the washroom was. I pointed her in the right
direction, then continued doing my work. She came back a few seconds later
all indignant. "But that's the HANDICAPPED washroom!" she huffed, sincerely
offended by the idea that she might have to use an accessible washroom.

It occurs to me that this story is a perfect metaphor for people who get all
offended when wished Happy Holidays instead of Merry Christmas.