Comment by Moru

People do it out of spite. We have similar problems with the white population hating the Sami similar to what USA has had with Indians. There were cases just outside of Umeå close to the winter rally where some raindeers were killed. [0]

The drivers feel that the Sami puts the reindeer on the road to be in the way and cash in on the money they get for the killed raindeers. (Secret tip: It's not enough to be worth it to watch your domestic animals die in your hands or be forced to finnish them off yourself because the owner are forced to take care of the dead animals.)

[0] https://swedenherald.com/article/three-reindeer-killed-linke...