By Felicity Clarke, Senior Contributing Reporter
RIO DE JANEIRO, BRAZIL - It's 3AM before São Paulo hip hop group Racionais MCs take to the stage under the Viaduto Negrão de Lima in Madureira. The parking lot under a concrete overpass in the Zona Norte neighborhood is packed with hip hop fans from across the city in anticipation of one of the country's leading rap outfits playing at the twenty year old home of Black Music in Rio.
Every Saturday the Espaço Cultural Rio Hip-Hop Charme . . .