about social issues such as police brutality, teenage pregnancy, and racism. Other rappers take a less critical approach to urbanity, sometimes even embracing such aspects as crime. Schoolly D was the first notable MC to rap about crime. Early on KRS-One was accused of celebrating crime and a hedonistic lifestyle, but after the death of his DJ, Scott La Rock, KRS-One went on to speak out against violence in hip hop and has spent the majority of his career condemning violence and writing on issues of race and class. Ice-T was one of the first rappers to call himself a "playa" and discuss guns on record, but his theme tune to the 1988 film Colors contained warnings against joining gangs. Gangsta rap, made popular largely because of N.W.A, brought rapping about crime and the gangster lifestyle into the musical mainstream. Materialism has also been a popular topic in hip-hop since at least the early 1990s, with rappers boasting about their own wealth and possessions, and name-dropping specific brands: liquor brands Cristal and Rémy Martin, car manufacturers Bentley and Mercedes-Benz and clothing brands Gucci and Versace have all been popular subjects for rappers. Various politicians, journalists, and religious leaders have accused rappers of fostering a culture of violence and hedonism among hip-hop listeners through their lyrics. However, there are also rappers whose messages may not be in line with these views, for example Christian hip hop. Others have praised the "political critique, innuendo and sarcasm" of hip-hop music. In contrast to the more hedonistic approach of gangsta rappers, some rappers have a spiritual or religious focus. Christian rap is currently the most commercially successful form of religious rap. With Christian rappers like Lecrae, Thi'sl and Hostyle Gospel winning national awards and making regular appearances on television, Christian hip hop seem to have found its way in the hip-hop family. Aside from Christianity, the Five Percent Nation, an Islamic esotericist religious/spiritual group, has been represented more than any religious group in popular hip hop. Artists such as Rakim, the members of the Wu-Tang Clan, Brand Nubian, X-Clan and Busta Rhymes have had success in spreading the theology of the Five Percenters. Literary technique Rappers use the literary techniques of double entendres, alliteration, and forms of wordplay that are found in classical poetry. Similes and metaphors are used extensively in rap lyrics; rappers such as Fabolous and Lloyd Banks have written entire songs