What are the four horsemen of the apocalypse? Some people claim that the “four horsemen of the apocalypse” represent Communism (red), Catholicism (white), Islam (pale/green), and Capitalism (black). However, the Bible already defined what each horse means. If the Bible gives a parable or metaphor and then explains it, there should be no speculation because an explanation is already provided. The four horsemen represent exactly what the Bible says they represent, and nothing more.