Attributions for the rioters ' behaviour include social factors such as racial tension , class tension , economic decline and the unemployment that it had brought , as well as individual factors like criminality , hooliganism , the breakdown of social morality and the development of gang culture .

Monis was described Check by Abbott as having indicated Statement a `` political motivation , '' but the eventual assessment Judgment_communication was that the gunman was `` a very unusual casea rare mix of extremism , mental health problems and plain criminality . ''