The Harlem Renaissance was one of the most important artistic and cultural milestones in modern history, and a sweeping new exhibit at The New York Historical highlights how this era was — as Henry Louis Gates Jr. once put it — “surely as gay as it was Black.” This perspective rings true for Allison Robinson, the lead curator of “ The Gay Harlem Renaissance. ” “In school, we tend to learn that the Harlem Renaissance was focused on race and class, and the things that they’re producing, but in