This perhaps is the impression formed by the media. As to shooting children, somebody must shoot at these Palestians children whose bodies are shown .
Anyway here, young soldiers tell many about cruel atrocities inflicted on Palestinians on purpose. While telling the cruelty stories, they laugh and gigle and seem to enjoy themselves very much. Nothing of this kind you will find with American soldiers, that is, not cruelty for its own sake and the joy of it. Rather, you will find there an attitude of integrity and responsibility, since they have been trained to hard self discipline, among other things.

This phenomena of sheer cruelty for its own sake must be uprooted, as have been clarified by many Israeli speakers, including the Minister of Defence

An excellent question. The military law should be full scale active in uprooting these prevalent phenomena by punishing those leading with atrocities, that give bad examples to many many others that follow them