Another professor allows the use of masculine pronouns to refer to individuals whose sex is unknown but bans t-shirts that bear vulgar captions. Social scientists routinely divide the population along lines of race, sex, and religion. They categorize the groups thus formed statistically. Political scientists write about the Catholic vote. Psychologists teach courses about the psychology of women.
Economists examine the entrepreneurial habits of immigrants.
As part of an effort to combat prejudice, a college wishes to ban the exchange of jokes that demean people of particular ethnic and regional origins. Several years ago, a few artists achieved notoriety and provoked a public outcry by using money provided by taxpayers to produce work many taxpayers counted as blasphemous or pornographic.