Toxicity is such a brilliant piece of music. One of a number of songs where System of a Down demonstrate that their musicianship and songwriting is right up there with Tool or Rage Against the Machine. This song is a journey, both musically and lyrically, carrying me through a whole series of emotions, from anger, to frustration, to melancholy, to resolution. On top of that, this is one of their most explicitly political songs, along with Prison Song.