Their weapons are firebombs and spray cans, and they have been branded Jewish terrorists; Panorama has exclusive access to the so-called Price Taggers, the Israeli teenagers who have sworn never to give up the land God gave them. They believe every Palestinian attack and every attempt by the Israeli government to hand back land should be met with an act of revenge - a Price Tag. Israel says it is determined to tackle what has been described as this enemy within, but do the authorities have the ability or the will to stop them?