In the ruins there's a network for the toxic rock
Schoolyard to precinct, suburb to project block

from Rage Against the Machine – Down Rodeo Lyrics on Rap Genius

Meaning

In the ghetto, there is a network for dealing crack rock that the police/CIA are involved in. It’s easily available. We can get the substance anywhere (“Schoolyard to precinct, suburb to project block”).

In CIA (Criminals in Action) Zach rhymes with KRS One and Last Emperor about this same topic. Zach raps, “You know the cops they got a network for the toxic rock”.

http://www.youtube.com/watch?v=A2fMyd-vKHI

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