"In the song, the rapper declares he would not perform only for cash: "I don't rap for dead presidents," Eminem says. "I'd rather see the president dead. It's never been said, but I set precedents and the standards, and they can't stand it!"
I dunno. I don't see anything particularly threatening about these lyrics. Dead presidents refers to money. Eminem's saying that he'd rather see the president dead before he'd rap for money (dead presidents). That's kind of like saying I'd rather have tacks stapled in my toes before I'd work in BigPR again.
Then, of course, he's using the universal (cough) "I" to represent the power of music and art (and, say, blogging) -- the anti-institution stuff -- to set the real standards and precedents of our culture and nation. And that said insitutions, government mainly, can't stand that art is more potent than institution.
At least, that's what I'd argue if I were him and the secret service came a knockin'.
Man, whatever happened to poetic license.
P.S.-- Great PR move by Eminem.