The “alleged complaints did not play a role in Mr. Kowalski’s separation,” Belair said in a statement shared with the Globe. Kowalski, who said he received no warnings prior to his termination, said he wasn’t given a specific explanation for his dismissal, though he was given a letter that cited “unprofessional conduct and damage to the museum.” “I still don’t know why I was fired,” Kowalski said by phone Wednesday. “I’m assuming it was because I reported that our director had made antisemitic comments to me regarding this Holocaust exhibition.” Kowalski, who previously worked at the Andy Warhol Museum in...