Lyrics @ Lyrics.Wikia.com/Gil_Scott-Heron:No_Knock.
The song was first released in 1972 on Free Will (when he was working esp' closely with Brian Jackson). It's also available as No Knock (2001 Remastered - Master Take) & No Knock (2001 Remastered - Alternative Take). 70s / best of 1972 / 1972 albums
An updated take, on the song, comes to with Spec Boogie's No Knock.
The Last Poets are set to play at The Barbican (London, 11 Sept 2010) - with The Roots & David Murray - I hope this proves to the less, seemingly, politically neutered - for Babylon remains a Mean Machine. …