The proverbial rise and fall of an acclaimed star is always something we tend to marvel at in hip hop, especially when it’s a prominent figure who once appeared to be indestructible for so many years. In 2015, we watched the collapse of Birdman — who was once an indomitable C.E.O. — become the face of thievery and betrayal because of his selfish antics. Birdman is on the verge of being ostracized from hip hop, unless he does some serious cleaning up. See which artists took shots at him in 2015.