It's a function of dehumanising the enemy.Its Israeli law that nearly all citizens have to do military service.
So you'd think that a considerable amount of those in the IDF are conscripted.
Does that mean that the extremely poor behaviour and attitude is a reflection of the wider community?
If you were actually a left wing pacifist in that environment, ( conscripted into the military ) you'd be really messed up about what your colleagues are doing.