That Harry Potter image comes from Bettybowers.com. Bettybowers.com is an atheist website pretending to be a Christian website. Like "Landover Baptist", it "parodies" Christians (and calls what it does "humor"), then other atheists will proceed to quote it as if it was really the work of Christians.
Yes, if the purpose of this thread is to insult Christians, once again, I want to know which Christians the OP means. I am one, and I loved the Harry Potter series. it's not great literature, but it is very imaginative and a fun read for children and adults. Like most people who love books, I lauded Ms. Rowling for getting young people interested in reading again in the age of video games.
Sure, self-righteous rednecks who take everything literally really seemed to think Harry Potter was going to hell - I wanted to point out to them (but I knew they would be too hard-headed to understand) that fictional characters in children's stories CAN'T go to Hell.
Having said all that, I remember reading a British review of the series wherein the book critic asked, when they have the Christmas banquet at Hogwart's - what exactly is it that they're celebrating?
Wouldn't they view Jesus Christ much as chickens view Colonel Sanders? The worse scourge ever?
Those who have read 'Harry Potter' know that the witches and warlocks were comically ignorant of the 'muggle (non-witching) world. They called electricity, "ekeltricity', didn't understand telephones, and would wear get-ups like yellow-plaid sports jackets, leather pants and swimming flipper when they wished to move incognito in the mainstream muggle world. So what would they know of muggle religious faith?
One might think Halloween would be right up their alley, but I think not. Their take on Halloween would probably be more like the time I took some Italian tourist ladies to San Francisco's North Beach district. North Beach bills itself as a 'Little Italy', but my Italian friends found it faux genuine and quite laughable. We left after ten minutes. I think they might have even been offended except that they must have realized I meant no harm, and had honestly thought they would enjoy the place. silly me!
So our Halloween costumes and our take on the witching world probably just leave Harry and his friends puzzled. As Ron Weasley, might comment, "Mental!"