Indeed, as with the Guns N' Roses anthem "Civil War", many will be inclined to dismiss the song because of the singer. But that would be a mistake, because in addition to an all-round feral beat, "Business" delivers a chorus for the ages. It is one that any throng determined to bring about positive change should be able to get behind in full-throated fashion:
Let's get down to business
I ain't got no time to play around, what is this?
Must be a circus in town, let's shut the shit down
On these clowns, can I get a witness?
(Dr. Dre: "Hell, yeah!")
Repeat this to yourself ad nauseam, and see if you don't get all worked up and impatient. Now imagine thousands marching beside you with the same refrain on their lips.
Here's the studio recording of "Business," from The Eminem Show:
A live performance:
Song available on The Eminem Show (2002), track 3.
Full lyrics here.
A sparse Wikipedia page for "Business."
An MP3 (I know not the provenance) of the instrumental track only. Blast it, clap along, avoid Eminem's woman-baiting and name-dropping lyrics, and chant the chorus in the right places. Repeat as required.