The document discusses the history and development of hip hop music and culture. It covers the origins of hip hop in the 1970s in New York City, the emergence of rapping and DJing, and how hip hop grew into a mainstream genre in the 1980s. The document also discusses significant artists who helped develop hip hop such as DJ Kool Herc, Run-DMC, N.W.A., and Grandmaster Flash. It notes how hip hop influenced and was influenced by other genres like pop music. Finally, it discusses how artists are portrayed in hip hop music videos and culture, including the objectification of women and glorification of wealth.