After Lena Dunham’s “Girls” was criticized for not having enough minority characters before its second season aired, the hit HBO show’s been bashed again, but this time for its sex practices. “The Good Wife” star Alan Cumming told Fern Mallis during a 92nd Street Y discussion on AIDS for Mallis’ Fashion Icons series that the many racy scenes on “Girls” should include more moments in which characters practice “protected sex.” “We’ve got to try and stop this cavalier attitude that it’s in the past,” said Cumming of the AIDS epidemic. “It’s not.” “Girls” will have its third-season premiere at Jazz at Lincoln Center’s Rose Hall on Jan. 6. Ironically, Cumming’s comments came following a screening of another HBO project, “The Battle of amfAR,” exec-produced by Kenneth Cole. Cole, the straight designer who has become infamous for his at-times politically incorrect tweets, joked about his experience in the ’80s at the height of the AIDS outbreak: “At the time, I was a single, male designer . . . so I knew everybody would assume I was Haitian.”