Does anyone know the background riffs found in "Ghost of Tom Joad" by Rage Against the machine? (Renegades)

Riff 1 starts at 1:10-1:37

Riff 2 starts at 2:19-3:14 (riff 1 also comes in at 2:48-3:10ish)

Riff 3 3:30-3:41 (also heard 5:06-5:20)

any help would be greatly appreciated.
im pretty sure if u youtube tom Morrello guitar lesson on youtube and u do a lil bit of sifting he explains the lil noises he makes in the song, im pretty sure ive seen the vid