Halloween was not a harmless holiday in times gone by. People in our modern era are mimicking the witches and Druids of old but Halloween's origins are in the Druidic cult. A cult so given over to human sacrifice that when the Romans conquered Britain, they wiped out every Druid they could find.
As darkness set in on October 31st, the clan of Druids would put on their white robes and hoods. They would carry sickles as they began a torchlight procession. At the beginning of the procession, a male slave was killed and dragged by a rope fastened to his left ankle. The Druids would walk until they came to a house or a village where they shouted the equivalent of “trick or treat.” The treat was a slave girl or any female to be given to the Druids. If the people refused to give a girl as a “treat”, blood was taken from the dead slave and used to draw a hexagram or six-pointed star on the door or wall of the village. Spirits of the “horned hunter of the night” were invoked by the Druids to kill someone in that house or village by fear that night.
If the house or village gave a girl as a “treat”, the Druids put a pumpkin with a face carved in it in front of the door or gate of that place. Inside the pumpkin was a candle made of human tallow to keep evil spirits away. Thus, the Jack-O-Lantern was a sign that you had cooperated with Satan.
The treats or female victims were taken to Stonehenge where they were raped and killed and then sacrificed on the sacred bone-fire until only glowing embers were left. The bone-fire is the origin of the modern day bonfire. As a matter of luck for winter survival, all villagers were expected to use the glowing embers of the bone fire to light their hearths.
So that is the history of Halloween.