“Search the term “cast out demons” at Bible Gateway. The Gospels are full of the reference.”
The dog and pony shows of “exorcists” has nothing to do with casting out demons as presented in the Bible.
I agree with you about the “dig and pony shows.”
A true exorcist would not do the work in public as bystanders can get stung.
When I have done it in public, I don’t allow the group to know what is happening. It just happens spontaneously.