Who’s Allowed to Wear a Black Panther Mask?

As children express fandom for Marvel’s latest superhero, parents face new questions about race, cultural appropriation and permission.

In an interview with BuzzFeed News in the fall, Sterling K. Brown, a star of “Black Panther,” thrilled at the prospect of children, black and white, dressing up as the title character. “This Halloween, the first time I see a little kid, a white kid, dressed up as Black Panther, I’m taking a picture,” he said. “You better believe I’m taking a picture, because that’s the crossover.”Chadwick Bosem...