Bernie Sanders puzzles the establishment. A self-identified socialist, long affiliated with no politcal party, from the tiny state of Vermont, Sanders has been relentlessly marginalized and ridiculed by the national politcal power brokers and the media that supports them. Yet, his presidential campaign against the 'inevitable' Hillary Clinton is already posing a credible threat to her in Iowa and New Hampshire. Who is Bernie Sanders? What accounts for his seemingly overnight rise from marginal figure to national player? (W/A/CA) Ted Rall