動物実験
This is the first (and only) Arch Enemy album to have lyrics written entirely by Angela Gossow, instead of a collaborative effort between her and Michael Amott. Lyrically the album focuses on various political and social themes like religion in the song "Bloodstained Cross", animal testing in "Cruelty Without Beauty" and anarchism in the songs "No Gods, No Masters" and "Under Black Flags We March" (the black flag is an anarchist symbol). Animal testing was also criticized in the video for the song "Cruelty Without Beauty" showing video footage from animal test laboratories.