Eminem is widely viewed as one of the greatest of all time and usually, when somebody decides to criticize him, they’re bound to get a few bars on Marshall’s next project. It’s unclear when (or if) Eminem is thinking of dropping his next album but after this, Justin Bieber may see his name included in some diss lyrics.The pop star took to Instagram to voice his opinion on Slim Shady, telling fans that he’s a fan of his music but not of how he’s spoken about newer rappers. Posting a screenshot of himself listening to “The Ringer” off of Kamikaze, Biebs decided to put in his two cents. “I just like Em’s flow but don’t like that he’s dissing new rappers I like the new generation of rap he just doesn’t understand it.”