1) They believe that they are indigeneous;. 2) They believe that they are entitled to something from the Palestinians, because of the Germans, 3) They believe that Europeans are superior people. Even the Mizrahim and Sephardim suffer because of racist Eurocentrism. It's the same mentaility that the American settlers displayed in the 1600s, the Brits unhapplity showed in the Raj, and the Dutch in South Africa.
Australian police arrest 5 over shooting 'linked to terrorism' (Reuters)