Rastafarianism
History
To start explaining the whole development of the Rasta movement, we need to be informed about how were Blacks treated back in the day. Oppression and Slavery of the Black Man goes back very far, back when the Black man was put on a ship and deported out of Africa. The "revival" was during the 1920's, mostly in Jamaica among the many working-class and peasant blacks who were discriminated against.
This religious movement is heavily influenced by the work and writings of Marcus Garvey.
1927: Marcus Mosiah Garvey appears as one of the main leaders for Black Civil Rights. He was a black Jamaican publicist and organiser, interpreting and prophesying for black social and political aspirations. In 1927, he claimed that somewhere in Africa, a king will emerge and save the Black Man. "Look to Africa, for there a king shall be crowned"
1930: In Ethiopia (or Zion or even the Promised Land), three years after Marcus Garvey's prophecy, Ras Tafari Makonnen is crowned as Emperor Haile Selassie, King of Kings, Elect of God, Conquering Lion of the tribe of Judah, and Messiah, Savior of the Black Man.
Haile Selassie did indeed help the Black Community, but was mostly looked up to by all Rastas who believed in the prophecy. He is the messiah, viewed with great reverence.