Whenever Donald Trump is called out for his crude remarks — about Mexican immigrants, John McCain, women or his comments about Fox News host Megyn Kelly — he blames the criticism on "political correctness" ("The Donald's nemesis," Aug. 11).
Mr. Trump seems to glory in his political incorrectness, which is one of the many reasons he is unfit to be president.
But political correctness or incorrectness is not the issue. The root problem, which goes much deeper, is civility.
Years ago, Stephen L. Carter wrote a wonderful book called "Civility: Manners, Morals, and the Etiquette of Democracy." Clearly, Mr. Trump knows nothing about any of these things.
The fact that 23 percent of Republican primary voters support him shows that a lot of other people in this country know nothing of such things either.