Some, as I have heard, have said we should not call the killers killing Benue state and Taraba state farmers herdsmen.

The question we should ask them is...

..."Who moves in and benefits from the land when the killers have chased the villagers away?"

Who moves into the lands?
What do they do when they move into the lands?
What happens between the people who move into the lands and the killers after they have killed and chased away the villagers?

Below is a picture from the mass burial ceremony conducted for the dead after the 2018 new year's day attack courtesy CNN (https://edition.cnn.com/2018/01/11/africa/benue-killings-mass-burial/index.html)

Asking the right questions usually point us in the direction of the right answers