The meaning behind the witches hat is actually kind of ironic. Depending on who you ask, it was either supposed to represent the cap worn by many of the druidic elders (though they never stood up like the modern witches cap but laid down the back of the head like Dumbldore in the Harry Potter movies) and was used by the Catholic church to demonize this relatively harmless group..
OR
It is actually supposed to be representative of the early mitre worn by the pope, and used by Protestants and later Christian sects to demonize the Pope and Catholics since many Christians felt (and some still do) that many of the Catholic rituals were essentially witchcraft.
As to when/why it started being depicted as a sharp verticle point, I personally don't know but suspect it's easy marketing. When Halloween really took off in America (mid 20th century), the icon of a witch with a pointed hat was easy to mass produce and instantly recognizeable.
pointed ones
Pointed.
they wear tall pointy hats.
Witches looks like normal everyday people. Witches does not wear black robes or pointed hats to walk on streets. You cannot distinguish a witch just by looking at them. There are secret signs and symbols among witches to identify each other. These cannot be noticed by average people.
There are what are called witches, male and female. They don't usually wear those Disney-like pointed hats with stars and moons on them. They are not harmless and should be avoided at all costs.
A woman who can cast magic or makes potions. THEY DO NOT WEAR POINTED HATS!
The name Dene in their language actually means pointed hats or clothing.
Black, like everyone else.
Usually white sheets and pointed white hats.
ku klux klan (aka KKK) wore white pointed hoods and white sheets because they wanted to scare freed slaves into thinking they were ghosts.
The Dene-Tha use to wear CedarThe name Dene in their language actually means pointed hats or clothing.
Pentecostal men do wear hats.