Meaning of "Day of the So Called Glory" by Gramatik

The repetition of the phrase "Ever since this world of ours began, Man's been killing off his fellow man" underscores the concept of human violence as an inherent part of history. The mention of "Flags and Symbols saying mankind" suggests that these symbols meant to represent unity and identity are often used as tools for division and conflict. The lyrics seem to reflect on the cyclical nature of war and violence throughout human civilization, pointing to a bleak reality of mankind's destructive tendencies. It serves as a reminder of the continuous struggle for peace and the need to break free from this destructive cycle of conflict.