While there are many things to legitimately fear in the world, I find that human beings have a tendency to heighten these fears to the point where we lose scope of what we should actually be afraid of; what the original source of fear was, and how to act in order to protect ourselves. If you lose sight of what the original source was, then any action you take to prevent it from happening again is fairly useless.
I just read a news story from last October about a town in Pennsylvania who, after 16 years, lifted a ban on trick or treating after dark. The ban was put in place in October of 1992, after an 11-year-old girl, Shauna Howe, was abducted and murdered by two men.
Death is tragic. Murder of children is devastating. The people who commit these acts are the source of fear, and have nothing to do with a holiday.
I decided to do a bit of digging on the original story, and what I found illustrates my point of displacing fear.
The girl wasn't taken on Halloween. She was actually attacked on October 27th, while walking home from a girl scout Halloween party. On her own.