Racionais MC's is a Brazilian hip hop group based in São Paulo. The original lineup formed in 1988 consisted of Mano Brown, Ice Blue, Edi Rock, and DJ KL Jay. Each member hails from the ring of favelas around São Paulo. Their lyrics combine themes of social justice with gangster imagery, a far cry from the idyllic breeziness typically associated with Brazilian rap music, Racionais MC's is often considered the most important Brazilian rap group.

Political hip hop is a subgenre of hip hop music that was developed in the 1980s as a way of turning hip hop into a form of political activism. Political hip hop generally uses the medium of hip hop music to comment on sociopolitical issues and send political messages to inspire action, create social change, or to convince the listener of a particular worldview. It was inspired partially by politically-focused 1970s artists such as The Last Poets and Gil Scott-Heron, as well as the Black Power movement and revolutionary politics of the 1960s and 1970s. Various hip hop artists emerged in the late 1980s espousing political messages and providing social and political commentary with KRS-One and his group Boogie Down Productions and Public Enemy in particular establishing themselves as some of the first predominantly political hip hop groups with albums in 1988. Soon to follow in 1989 and following years were other Political rappers, or known as "Conscious rap" including such groups as X-Clan, Poor Righteous Teachers, Paris (rapper), Disposable Heroes of Hiphoprisy and others The genre has helped to create a new form of social expression for subordinate groups to speak about their exclusions, injustices, and lack of power.