Well, Satanism is a perversion of Christianity; Paganism isn't really related to either.
Paganism is often seen as being related to Satanism...similar rituals and roots. Satanism is a perversion of natural law.
Yuppie paganism is nice and sweet and just people having religious fun. Rooted historical paganism is a death and sex cult.
Paganism and Satanism really are the same thing. They are both part of the organized rebellion against the authority of the One who created us, provides for us and will ulitmately judge us.
Oh, c'mon! "...is often seen as..?" Here we are having a nice flame war and you come up with bureaucratic gobbledegook?
I repeat:
Rooted historical paganism is a death and sex cult.
Go back into historical paganism... when Bacchaus drank his fill he killed his playmates in horrors of cannibalism. and so on, story after story. Dont read the cleaned up versions...read the original text translations.