RASTAFARAISM

Is rastafaraism a cult or what coz if you listen to most of the reggae music they praise haille sellasie and say that he is their god and shashamane would be the place where when their savior reyurns will go.Christians know and th Bible say clearly that there would be a new Jerusalem where Jesus will be ruling forevermore. there is a sng that they even say that jesus is sellassie and also salute their god as jah rastafarai. however I would like to know some other ffacts about them and anyone with an idea should share please.