the xtians in the us are not celebrating a day of the dead. the church allowed the retention of giving out sweets this day of the year, on its own all hallows day as a means to make their holidays palatable to the masses. same reason the church allowed the masses throughout the ages to plunder, rape and pillage around the 25th of december. now, even non xtians, including moslems, hinus and atheists have adopted the tradition of shnorring for candy and mischief making for its own secular holiday called halloween.
if you feel it is assur, ignore the dorrbell.