“My generation saw this country elect its first black president and then turn around and elect a racist to the White House—and we ought to call that what it is.” So thundered Pete Buttigieg in an address Friday to the National Urban League.

These days a Democrat throwing the R-word at Donald Trump elicits more yawns than headlines. What makes the South Bend, Ind., mayor’s accusation worth noting is that he’s throwing this stone from inside a glass house.

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