What religion are they practicing?

What’s hilarious is their close mindedness is displayed by showing them burning books. We’ve come full circle now and it’s the ignorant left whos banning and burning books these days. With leftwing Hollywood/media defending it.

TV Tropes says that Shaw Moore is clearly a Protestant since he's married, wears no Roman collar, and is referred to as a Reverend, not a Father. This becomes extremely odd when his daughter, Ariel makes a remark towards him about "confessing her sins to her preacher in the church", which sounds like a very Catholic ideology.

https://tvtropes.org/pmwiki/pmwiki.php/Film/Footloose