It's a Halloween tradition to hand out pounds of candy to young costume clad trick-or-treaters, which their parents are supposed to then sift through and dole out to the child as they see fit.
If a child is allergic to an ingredient in candy it's the parent's job to remove those candies and keep their kids safe, but as people become more socially conscious the over-demanding and self centered start to take advantage.
One extremely pushy parent went around posting this list of demands around their neighborhood, and unsurprisingly forgot to include their name or address so their neighbors could properly thank them.
Asking your neighbors to hand out small toys instead of candy is one thing, but what kind of sadist hands out carrot sticks on Halloween?
-Via Boing Boing
I read this to my wife and she scoffed. I said, "Mark my words, this is what is going to happen eventually."
Today I see this post. That didn't take long at all.
I think that question was answered at the start of the sentence: sadists.
Between the poster and the deadly substance being handed out to children, I see the poster as the lesser evil.