Poetry ensemble The Last Poets and Gil Scott-Heron have been the earliest examples of Political Rap in 1970, when they introduced their first recordings. D.W. Griffiths' groundbreaking epic, The Birth of a Nation, the well-known 1920 movie Dr. Jekyll and Mr. Hyde, and the Robert Wiene epic from the exact same yr, The Cabinet of Dr. Caligari, are some notable examples of tinted silent movies.