"Chief Keef is one of the reasons we have all this violence...he has been one of the encourager's of the Violence," Pfleger wrote. "...Instead of having a concert...why doesn't he Man Up and acknowledge it's time to stop this violence and Apologize for his part in it!!!! we don't need a concert...we need PEACE......7 DEAD and 24 SHOT this weekend and he wants to do a concert.....Chief Keef....SHUT UP!!!!!"