How does halloween here in the UK compare to your childhood? Is it, as my husband said, that the Catholic Church turns a blind eye" and now that I'm attending a Pentecostal church and working at a Baptist Church that's causing this difference?
I think this is the major difference, actually. The more Evangelical/fundamentalist churches, even in the U.S., have always taken a hard line against anything they feel is in anyway associated with, or might 'normalize,' occult or 'pagan' activity. This includes Halloween, Harry Potter, Dungeons & Dragons, KISS and many other mainstream/pop-culture elements.
I noticed a difference just in moving from one region of Wisconsin to another. My hometown was pretty much either Catholic or Lutheran, and had no particular problem with any of these things. They see them as fairly innocent fun. But when I moved to an area with a much higher number of Baptists, Pentecostals, Reformed, etc., there seemed to be a
lot more people who were anti-Halloween, lots more churches holding 'alternative events,' etc.
So, while there's certainly a difference in the way Halloween is treated here (i.e. it's just not as big a deal), probably your new church environment is the biggest factor, and you'd likely find the same thing (or even more vehement opposition!) if you were in similar congregations in the U.S.