A number of articles are available advising Christians to have nothing to do with Halloween. And I do agree that Christians have no business celebrating a holiday that glorifies something that delights the enemy of our souls. And potentially opens us up to demonic harrassment, to boot!
But if we've got kids, especially kids in public school or who hang around other kids in the neighborhood, it's entirely possible that parents can feel pressured to do something about Halloween. After all, it's pretty hard to hide under a rock for the whole month of October. A number of houses on our street are more decorated for Halloween than for Christmas!