From David Kamp’s excellent piece for Vanity Fair:
Boyega recalled that when there was a backlash against his appearance in the first Force Awakens teaser trailer, released in November 2014—the sight of a black man in stormtrooper armor drew ire from racists and doctrinaire Star Wars traditionalists—Fisher counseled him not to take it to heart. “I remember—and forgive me, I’m going to drop the f-bomb, but that’s just Carrie—she said, ‘Ah, boohoo, who fuckin’ cares? You just do you,’”
This is just one of many wonderfully personal stories sprinkled throughout the piece. While really lengthy, the whole thing is worth a read.