Two of the most important contributions, though, were those made by the aforementioned Grandmaster Flash, along with the Furious Five, and Afrika Bambaataa. Bambaataa was, aside from rapping, was a social activist. He had formed the Zulu Nation in the 1970s, and brought the Nation's emphasis on knowledge and social awareness to rap. Bambaataa was one of the first to incorporate politics into his music - he sampled Martin Luther King, Malcolm X, and others into his music. Bambaataa also pioneered the use of other types of music into rap; he sampled the electronic group Kraftwerk in "Planet Rock", and called the sound
