Any one know what samples are used in "Yo Yeah" ?

There is some beautiful poetry going on in that song.
Who wrote/performed it?
I know it was sampled from some older stuff similar Nikki Giovanni

any ideas okayplayers?

I am looking for the poetry:



Black is black is something to laugh about black is something to cry about
black is serious black is a feeling black is us the beautifull people


That was when some of them bad niggas made beauty moving juju changes the drum
music hum! Mojo vibrated and high jons screamed through the bloods to no one
hears the blood sounds no more folk intercourses and all the niggas listening
acted visionaries too dig my people they acted the ryhtms pulling there minds
was one and move move move universe earth spirit firing the soils to destroy
the evil un image cleanse the waste from the cold lands till the cosmos was
whole again and the worlds had become nude


3:30 in the morning with not a sole in sight we sat four deep at a traffic light
Talking about how dumb and brainwashed how dumb some of our brothers and
sisters are while we wait for a green light to tell us when to go.