John Sciulli, Slaven Vlasic, and Steve Granitz/ Getty Kamala Harris held a fundraising event at the home of Scooter Braun, and Katy Perry, Demi Lovato, and Ariana Grande were all in attendance. Taylor Swift publically vilified Braun in June for buying her entire catalog. She called him"incessant" and "manipulative." Now Swift's fans are calling out Harris for working with Braun.