Hip-hop, also known as rap, is a genre of popular music that originated in the early 70s by African Americans and Caribbean immigrants in the Bronx. Hip-hop music originated as an anti-drug and anti-violence genre consisting of stylized rhythmic music (usually built around drum beats) that often accompanies rapping, a rhythmic delivery of poetic speech. The music developed as part of the broader hip hop culture, a subculture defined by four key stylistic elements: rapping, scratching with turntables, breakdancing, and graffiti art.  While often used to refer only to rapping and rap music, "hip hop" more properly denotes the practice of the entire subculture.  The term hip hop music is sometimes used synonymously with the term rap music,  though rapping is not a required component of hip hop music; the genre may also incorporate other elements of the culture. 

The East Coast–West Coast hip hop rivalry was a dispute between artists and fans of the East Coast hip hop and West Coast hip hop scenes in the United States, especially from the mid-1990s.  In the late 80s Tim Dog released the album Penicillin on Wax and he sang several skits which mocked West Coast rappers and that same album contains a diss track-that is a song written to attack somebody-. The battle between both coasts kept increasing to the point that in 1994, Tupac had been assassinated by the group Junior MAFIA that they were affiliated with Bad Boy, one of the biggest rivals of Tupac. But he was not the only one because in history lots of more rappers had been assassinated by means of criminal groups like the Bloods or the Crips.