“One of the best birthday presents anybody ever gave me was a “calling card” by the conceptual artist Adrian Piper. I was in college at the time, and it felt like the ultimate inside joke handed from one racially ambiguous person to another.
Slim and innocuous as a business card, it reads: ‘Dear Friend, I am black. I am sure you did not realize this when you made/laughed at/agreed with that racist remark. In the past I have attempted to alert people to my identity in advance. . . . I regret any discomfort my presence is causing you, just as I’m sure you regret the discomfort your racism is causing me.’”