The War on Terror Music
Released on Green Day's 21st Century Breakdown album, "21 Guns" was largely claimed as an anti-war song several years into the Iraq War.
Inspired by the September 11th, 2001 terrorist attacks and his father's death (who was a veteran), Toby Keith's country hit highlighted his—and many Americans'—anger.
Believe it or not, OutKast's "B.O.B. (Bombs Over Baghdad)" was released in 2000. Yep, three years before the Iraq War heated up. So, it may not have all that much to do with the Iraq War or the First Gulf War, but listeners can't help associating this song with the War on Terror.