In the climactic scene of the musical "Caroline, or Change," an 8-year-old Jewish boy, Noah, and his African American maid, Caroline, living in the Jim Crow South, get into a heated fight and end up trading ugly insults. Noah says he hopes a bomb kills all Black people, and Caroline responds that all Jews will go to hell. It's always a charged moment, but there was something peculiarly unsettling about it the night I saw the recent Broadway revival. For while there was silence after Noah's hateful outburst, what followed Caroline's comment was something I did not expect: laughter. Nervous giggling in uncomfortable moments can be a coping mechanism. And that wasn't the audience reaction every night. But in a radio interview, Sharon D Clarke, who played the title character, said that at the majority of shows, there was laughter. She was disturbed by it but couldn't explain it.