PPS I have had a chance to listen to the video, and in particular to the question and answer session of the final 30 minutes or so. Here are my comments on that, as posted on Bishop Hill (on the post linked to in the PS hat-tip):
'When I ask them what they want, a typical response is “radical transformation of the economy” to reduce income inequality, racism and sexism and, of course, to end climate change. Government will command these changes to achieve this transformation. These are young Stalinists who are willing to suspend almost every basic freedom and civil liberty for “the greater good". '
Stephen Moore, http://patriotpost.us/opinion/39101