I think it is an anti-war song to an extent...but yeah, also just the dumb things ppl do in general out of anger, sadness, ignorance. the lyrics simply states it flawlessly..."blame it upon a rush of blood to the head." AROBTH literally, physically bothers you, makes you redden, but also ppl use that syaing to justify their irrational outbursts...it's about time Chris put those bastards in their place. muahah.