To me, it's about how life, society and religion all make you as a person and the things you do seem wrong, and so we're always feeling guilty. But she's saying, why should we? To Crucify is to persecute; because of societies expectations of us we persecute ourselves for being/acting a certain way, but we shouldn't.
I don't think the song is anti-religious, really, although it's saying religion is responsible for some of the rules made up by society that make us "crucify ourselves". However, I think Tori's generally just using religion and crucifying as symbols for other struggles in life.
To me, it's about how life, society and religion all make you as a person and the things you do seem wrong, and so we're always feeling guilty. But she's saying, why should we? To Crucify is to persecute; because of societies expectations of us we persecute ourselves for being/acting a certain way, but we shouldn't. I don't think the song is anti-religious, really, although it's saying religion is responsible for some of the rules made up by society that make us "crucify ourselves". However, I think Tori's generally just using religion and crucifying as symbols for other struggles in life.