If we have kids from the neighborhood come on Halloween asking for candies, should we open the door? Should we give treats and such?
Halloween is rooted in Avoda Zara. Celebrating Halloween also involves serious issues of Chukos Hagoyim, especially that it is difficult to find a rational explanation to the celebrations other than its pagan source. The pagan origins are very obvious and they’re still part of the consciousness of the people.
At The same time, there’s room to permit it where it involves issues of איבה or דרכי שלום.
ראה תורת מנחם – מנחם ציון ב ע׳343