If you think these type of people do not exist in your workplace, you are probably mistaken. There are people who will be genuinely offended by things like this (probably due to their own insecurities) and there will be people who are simply looking for a reason to get you into trouble. At any rate, under most laws in the states, the company is liable if they do not act upon such complaints, and so they will act, and harshly. And I don't think maintaining some joke put into a screensaver for the sake of sticking to the PC police is worth someone losing their job over. There are better battles to fight.
Whatever the reasons, even somewhat understandable from a financial point of view, this is still censorship, which is always a legitimate fight to have.
Attachment:
smime.p7s
Description: S/MIME Cryptographic Signature
