(Credit: Salon/Benjamin Wheelock/AP/Michael Dwyer) To the extent that Democrats are looking for their progressive soul, Sen. Bernie Sanders is not where they should be fixing their gaze. Sanders is clear that he is not a Democrat — except when he needs to be one in order to run for president. Yet he is demanding that the Democratic Party head for what Rebecca Traister last week called “third-way centrist bullshit.” Economic populism and what are commonly erroneously and dismissively referred to as “social issues” — such as reproductive rights, immigration reform and civil rights for people of color, those who have disabilities, people of all faiths, LGBT people and women — are indivisible.