Is Royal Ruckus one of the most important underground hip-hop groups currently around? Well, if you believe that the rise of hip-hop is the most significant musical development in a quarter century, what other conclusion can you draw? Though they are not responsible for the birth of the genre, riding the mainstream charts or winning self-righteous and pompous industry awards, the Bakersfield collective represents the genre’s second coming of age. The acid-tongued rhymes, the throwback beats and scratching, the hipster...