Campaigner was photographed moments before his murder in rural Aleppo . Forced to his knees and shot at point-blank range by rifle-wielding militants . Man is understood to have been an activist who secretly reported on ISIS . Execution images were released on daily as ISIS made bizarre attempt to portray life under the terror as a pastoral ideal with farmer photographs .
Campaigner was photographed moments before his murder in rural Aleppo . Forced to his knees and shot at point-blank range by rifle-wielding militants . Man is understood to have been an activist who secretly reported on ISIS . Execution images were released on same day as ISIS made bizarre attempt to portray life under the terror as a pastoral ideal with farmer photographs .