Halloween is Celtic pagan festival mixed with Christian Saints festival. Saudis condemn people for 'worshiping graves' and calling on dead spirits, meanwhile they celebrate Halloween.
Businessinsider.com
The dark history behind Halloween is even more chilling than you realized
Juliana Kaplan and Áine Cain Oct 30, 2020
The day's morbid traditions go back to ancient times. Samhain, the Celtic festival of the summer's end celebrated in Ireland, Scotland, and the Isle of Man. According to Celtic mythology, the veil between the Otherworld and our world thins during Samhain, making it easier for spirits and the souls of the dead to return. People would make offerings of food in order to get on the good side of these spirits and departed ancestors, according to the Mirror.