The way the two major parties control the presidential debates is a perfect microcosm of how political debates are restricted in general. Though typically shrouded in secrecy, several facts about this process have recently come to light and they are quite instructive.
The conveners "invite you to attend a conference which brings together historians, social theorists, contemporary student activists, and Port Huron veterans to discuss the origins, historical impact, and contemporary relevance of the New Left's founding manifesto."
Speakers include keynoters Tom Hayden and Michael Kazin and twenty others, including Liberty Tree's Ben Manski. For the full schedule, location information, and more, see http://www.history.ucsb.edu/projects/labor/porthuron50.html