Only on the "CBS This Morning" podcast, hear from the CBS News team who led a year-long investigation into changes police departments across the country are making regarding race and policing. CBS News Chief Justice and Homeland Security correspondent Jeff Pegues, along with producers Elianna Mintz and Jonathan Blakely, tell CTM's Vladimir Duthiers what they learned about the how various departments have introduced racial bias training in light of high profile police shootings. They also discuss comments from two white police officers in Mesa, Arizona, who say implicit bias training "kills morale" and an officer in St. Louis who says there are white supremacists on the force.