Political correctness = rhetorical cowardice

I found this cartoon at the Dan Miller in Panama blog. Dan is writing about political correctness:

Political correctness (also known as rhetorical cowardice) involves being less than candid, not only about various protected classes but also about unprotected classes. Protected classes include some but not all members of racial (Black, Latin American and American Indian but generally not Oriental) and religious (e.g., Muslim) minorities, gender specific (Feminist and “gay”) and ideological (Librul) groups. Unpleasant truths must not be tolerated. Pleasant truths sometimes are not tolerated — although unpleasant untruths are encouraged — as to members of unprotected (conservative) religious groups (e.g., Jewish, Mormon, holy rollers and Evangelical) as well as otherwise protected racial (Black and Hispanic) and female (anti-abortion) groups.