When I was a kid we had Halloween, the night when the barrier between the world of the living and the world of the dead was at it’s thinnest. The night that witches flew and spirits walked, the night for staying home behind closed curtains and telling ghost stories by candle light.
The candles were important – they were supposed to drive away witches and keep you safe, especially if you made a turnip lamp. These were hollowed out turnips with a face carved into them, the more gargoyle like, the better. These candle lamps were placed in windows to scare away spirits…
Now that was Halloween, the eve of All Saints Day, not this garbage american import that forces parents to spend a fortune of stupid costumes and the rest of us to be held to ransom by a bunch of mercenary children demanding money or gifts at your door. 
Trick or Treat isn’t a British tradition, it’s a corruption of an Irish tradition that was taken to the USA by emigrants and has turned into a loathsome commercial event (as has Christmas) intended purely to make money for manufacturers and retailers, and misery for everyone else – including children.
They are taught to be greedy and mercenary, peer pressure forces then to compete with their friends to see who can be the greediest, parents are stressed both because of the build-up to it and the risks to children when out demanding money with menace and threats.
At least in Dorset we have a sensible Police force, except for traffic policies , as this year they printed free posters for people to display on their doors/gates. An official Dorset Police logo was followed by a note asking people to kindly NOT call at the house on Halloween.
So, “trick or treaters” be warned – you’re not welcome in Dorset any more… Anyone fancy a go at apple bobbing? 
