If it's Pagan Is it Demonic?

So my question is if something is pagan and has origins in paganism- does it mean it is demonic? And if its demonic does not mean it's demonized or someone will become demonized, does that make it a sin? It seems there are a lot of experts on what is supposably pagan but yet do they have what it takes to actually minister to someone who is genuinely demonized?