Napalm Death — Prison Without Walls lyrics

Trapped
Inside your head
Insular, living dead

Existing for a purpose youll never find
Inducements, distortions command your mind

External sources maintain control
Programmed existence, furfil your role

Youve got a brain, shake of the reins
Smash the shackles, break the chains
[ Lyrics from: http://www.lyricsty.com/napalm-death-prison-without-walls-lyrics.html ]