If political correctness is understood as the need to avoid comments which offend, exclude or marginalise groups within society, or to depart from a prejudiced viewpoint of these collectives, then I am strongly in favour. However, when political correction is taken too far, it can become inquisitorial leading to the exclusion or marginalisation of viewpoints that do not fit into the PC consensus. When this occurs it becomes highly pernicious, as it closes windows of debate and, by doing so, can actually harm the collectives that it sets out to protect.