Julia Angwin, ProPublica senior reporter, on the devices that are monitoring us – from Vizio Smart TVs to “zombie cookies” in cellphones. Brian Seibert gives a history of tap dancing. Deniz Gamze Erguven with her new feature film, “Mustang,” set in Northern Turkey. Larissa Liebman, Waterkeeper Alliance staff attorney, Sean Dixon, Riverkeeper staff attorney, and Riverkeeper boat captain John Lipscomb discuss a new report on the 5,000% increase in oil trains used on American waterways, and the Hudson.