Prayer to the spirits of the night

This shrine stands across the street I live on in Bangkok-Huaikhwang. It is active round the clock at any time of day or night. In other words, this is a kind of religious hotspot for Thais.
There are many stands. In a previous Blip, I already showed a scene with Ganesha (the elephant god in the background). Tonight, as I was passing by, I was somehow attracted by this black prince of darkness and watched people praying for a short while.