Lyric discussion by Lost Nomad 

I'm not sure how accurate this may be, but it seems to me that the this song is about someone suffering from Paranoia Schitzophrenia. I say this because of how crazy Henry Rollins is during this song.

"It lives in my brain, It's with me everyday"

Plus it's the war against the forces controlling the minds of a schitsophrenic person.

It also has some screaming that although is the same kind as in the shitty emo bands, actually goes with the song, and is the only time I have ever heard screaming utilized in a decent way. Even the recording quality sucks and it's a great way of how Black Flag stays true to true punk and says "Hey fuck your polished music, recording industry."

Enough of my ramblings...

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