There are no forbidden words or expressions on Wikipedia, but certain expressions should be used with care, because they may introduce bias. For example, the word claim , as in "Jim claimed he paid for the sandwich", could imply a lack of credibility . Using this or other expressions of doubt may make an article appear to promote one position over another. Try to state the facts more simply without using such loaded words ; for example, "Jim said that he paid for the sandwich". Strive to eliminate expressions that are flattering , disparaging, vague, or clichéd, or that endorse a particular point of view (unless those expressions are part of a quote from a noteworthy source).
One of the best-known examples of racism is the “Guess Who’s Coming To Dinner” scenario where parents are scandalized about their child marrying someone of a different race. Pew has done some good work on this and found that only 23% of conservatives and 1% (!) of liberals admit they would be upset in this situation. But Pew also asked how parents would feel about their child marrying someone of a different political party . Now 30% of conservatives and 23% of liberals would get upset. Average them out, and you go from 12% upsetness rate for race to 27% upsetness rate for party – more than double. Yeah, people do lie to pollsters, but a picture is starting to come together here.