VIDEO : Kendrick Lamar Says There's Beef Between Taylor Swift & Katy Perry

Despite his collaboration with Taylor Swift on the 2014 track "Bad Blood," Kendrick Lamar wants no part of the feud between Taylor Swift and Katy Perry. The 30-year-old rapper appears on the newest issue of Rolling Stone. In his interview, he's asked if he knew that the song was most likely about Perry. Lamar says, ""On the record, no. I have to stay away from that, for sure. That's some real beef."