Some fans weren't happy when Benny Blanco and Jimmy Fallon decided to cut into a purple cake while promoting a cookbook. Even though Blanco has shown his love for the K-pop band BTS, including collaborating with them on a recent single, fans felt uneasy seeing him and Fallon cutting into a cake decorated with the BTS logo. Fallon, who's famous for his interviews with BTS, joined Blanco in the video.

Why are BTS ARMYs upset with Jimmy Fallon and Benny Blanco?