Gabrielle Union’s exit from America’s Got Talent was one of the hardest things she’s ever dealt with.The L.A.’s finest star recalled her experience during the Minding Her Business panel discussion at the virtual American Black Film Festival, labeling it “so surprising and so heartbreaking and so frustrating and so unnecessary”.Union, who departed the NBC show after just one series as a judge amid allegations of harassment and discrimination she witnessed and experienced during season 14,