Tupac Amaru Shakur (born June 16, 1971 – September 13, 1996), also known by his stage names 2Pac, Makaveli, or simply Pac, was an American artist renowned for his rapping and hip hop music, as well as his movie roles, poetry, and his social activism. He is recognized in the Guinness Book of World Records as the highest-selling rap artist, with over 75,000,000 albums sold worldwide, including over 50,000,000 in the United States alone. Most of Shakur's songs are about growing up around violence and hardship in ghettos, racism, problems in society, and sometimes qualms with other rappers. Shakur's work is known for advocating political, economic, social, and racial equality as well as his raw descriptions of violence, drug and alcohol abuse, and conflicts with the law. Many fans, critics, and industry insiders rank him as the greatest rapper ever.Shakur was initially a roadie and backup dancer for the alternative hip hop group Digital Underground. Shakur's debut album, 2Pacalypse Now, gained critical recognition and backlash for its controversial lyrics. Shakur became the target of lawsuits and experienced other legal problems. Later, he was shot five times and robbed in a recording studio lobby in Manhattan, New York City, New York. Following the occurrence, Shakur grew suspicious that other figures in the rap industry had prior knowledge of the incident and did not warn him; the controversy helped spark the East Coast-West Coast hip hop rivalry. After serving eleven months of his sentence for sexual abuse, Shakur was released from prison on an appeal financed by Marion "Suge" Knight, the CEO of Death Row Records.In exchange for Knight's assistance, Shakur agreed to release three records under the Death Row label. Shakur's fifth record, the first double-disc release in hip hop history All Eyez on Me, counted as two albums.