In his Tony Award and Pulitzer Prize-winning musical A Strange Loop, Michael R. Jackson skewered the predominantly white theatre industry through the main character's effort to create a "big, Black, queer-ass, American Broadway show." The result (at least for this repeat viewer) was exhilarating. In his newest work, White Girl in Danger, which is now receiving a co-production by Vineyard Theatre and Second Stage Thea…