After being asked by Kanye West to use a sample of their hit song "War Pigs," Ozzy Osbourne and Black Sabbath denied the request due to Kanye's anti-Semitic rhetoric. However, Kanye went ahead and used the sample at his Chicago listening party, causing Ozzy to publicly denounce him and claim he wants no association with him. This comes after the former Halloween costume-wearing duo dressed up as Kanye and his wife last year.