Some people simply do not realize that something is wrong with what they display at work.
A friend of mine, financial director in a very large company, had someone in his staff (a woman) who was also an amateur artist. One day she brought to their office a big male nude of hers (they were several in the office). The anatomy of was very visible.
My friend panicked on the "freedom of art vs. nudity at work" but found a solution: he put a huge cactus just in front of the painting, effectively hiding the matter of panic.
The day after the nude was gone, replaced by a boring landscape.