Looks like Taylor Swift has a powerful new enemy. Critics are charging that the singer, 27, ripped off Beyoncé, 36, with her “Look What You Made Me Do” video, but her director, Joseph Kahn (inset), now says it’s the other way around. Yes, Taylor rocks a “black crop top” similar to Bey’s outfit from her Super Bowl performance of “Formation,” he conceded in a Sept. 7 interview. “But in 2015 in ‘Bad Blood,’ Taylor was wearing a black crop top. I think Beyoncé copied ‘Bad Blood.’” The Beyhive, predictably, went ballistic. And while Kahn later insisted he was “trolling” everyone, he — and his pal Taylor — will soon feel Queen B’s sting. “He may be backpedaling, but he’s clearly Team Taylor and he started a war,” says the source.…