Sometimes children see things best... (A story, by way of illustration)
Nelson's birthday is on November 1st. The year he turned two Grandpa S. gave me $20 to buy decorations for a party. I went to the Party Tree store to buy a trucks and trains theme. I went to the store the week of Halloween and it was grotesque! There were some exhibits that made me feel physically ill. (Granted, I am more sensitive to gore than most). There were graves and grim reapers and worst of all a man with his head cut off - brains oozing out. The kids were terrified!
Now, up to that point in time we never even mentioned Halloween to the kids - there was no need, but this was a teachable moment. Rebecca asked "Why, Mommy? Why do people want to buy this? Why would they want to take it home?" I spent the next full hour in discourse on Halloween.
Humans, as a whole, fear and dread death - don't want to talk about it, think about it, plan for it... most folks hate funerals. Yet, once a year people glory in death, guts, and gore!
I leave with this verse that distinguishes Jesus from frauds. (And may perhaps help to distinguish Holy-days from pagan holidays!)
The thief cometh not, but for to steal, and to kill, and to destroy: I am come that they might have life, and that they might have it more abundantly. John 10:10 (KJV)