As understood today, political correctness aims at preventing social discrimination by curtailing offensive speech and behaviour towards underprivileged groups of individuals. The core proponents of political correctness often draw on post-modernism and critical theory and are notorious for their scepticism about objective truth and scientific rationality. Conversely, the critics of post-modern political correctness uphold Enlightenment liberal principles of scientific reasoning, rational truth-seeking and open discourse against claims of relativism and oppression. Yet, both the post-modern proponents and their Enlightenment liberal critics (...) make up two sides of the same phenomenon of political correctness. Both sides intend to protect a liberal value system from illiberal truth-claims, which is the function of politically correct regulation. While post-modern advocates attempt to promote liberating tolerance, Enlightenment liberals place liberal values above the open-ended search for truth. Despite appearances to the contrary, this socio-academic debate is not about two sides favouring and opposing political correctness. In fact, it is a debate about the type of politically correct regulation that can better guard liberal values. (shrink)