If you keep bees hornets are definitely the enemy :)

As for Halloween: In my community everybody decorates for Halloween. It's just an excuse for the community to share in a holiday that has no religious or political significance. Actually, I notice people who are devout Catholics don't decorate for Halloween because it is considered a pagan holiday. However, on November 1, the day after Halloween, Catholics are expected to attend mass. It is All Saints Day. I've no idea how that came to be, but that would be an interesting topic to explore.