"I built a pillar at the city gate and I flayed all the chief men who had revolted and I covered the pillar with their skins; some I walled up inside the pillar, some I impaled upon the pillar on stakes.' Such punishments were not uncommon. Furthermore, inscriptions recording these vicious acts of retribution were displayed throughout the empire to serve as a warning. Yet this officially sanctioned cruelty seems to have had the opposite effect: though the Assyrians and their army were respected and feared, they were most of all hated and the subjects of their empire were in an almost constant state of rebellion (185-186)." Source: http://www.ancient.eu/amp/1-12928/