The use of a pyramid in a mural depicting the advance of human society is a common symbol and is only noteworthy in the context of its prevalence in popular culture as a reference to either Freemasonry or the Illuminati.
Babylon 5: "The Gathering" (1993) (TV). Directed by Richard Compton. Written and created by J. Michael Straczynski. Michael O'Hare, Tamlyn Tomita, Jerry Doyle, Mira Furlan, Blaire Baron, John Fleck, Paul Hampton, Peter Jurasik, Andreas Katsulas, Johnny Sekka, Patricia Tallman, Steven R. Barnett. Babylon 5 (1993) (TV) (USA) 89 min. USA, English. Color, Dolby.