According to Wikipedia, it "is a term used to describe language, policies, or measures that are intended to avoid offense or disadvantage to members of particular groups in society".
However, the problem is that offense is subjective. Anyone can be offended by anything, and by extension, anyone else can claim that someone else is offended by something. Such subjective policies are often used for tyrannical purposes.
However, the problem is that offense is subjective. Anyone can be offended by anything, and by extension, anyone else can claim that someone else is offended by something. Such subjective policies are often used for tyrannical purposes.