Plenty of Christians are wrong.
Halloween is at heart a Christian holy day. It’s the vigil of All Saints Day, i.e. All Hallows Eve.
The way it is celebrated in this country is not Christian. As a practical matter, it is celebration of evil and evil spirits, not good (unless you want to argue that people walking around dressed up bloody murder victims has some connection to good).
Thanks, Claud. How I loved the mass that commemorated All Saint’s (isn’t it All Souls the night before?). Then hours of school followed by a wonderful costume, trick or treating and meeting all the lovely moms on that brisk autumn afternoon. Sadly, last year I didn’t get one single child.