Najaf under siege by US occupiers. We’ll talk about the ongoing violence and the implications if US forces destroy the Imam Ali Mosque. Activists descend on Kerry’s Chicago Campaign Headquarters demanding he issue a statement on the crisis in Najaf. Venezuela readies for referendum on the policies of Hugo Chavez. We’ll speak to a nun and activist just back from Venezuela and play an excerpt from the radical documentary The Revolution Will Not Be Televised. And the Knight Report.