Dem vs. Dem, Friday Film and 'Troublemakers'

Today, the day after the latest Democratic presidential debate, we look at the infighting within the party as it’s playing out on social media. Next, Madeleine speaks to an investigative reporter about his work on health care lapses at privately run prisons for immigrants convicted of federal crimes. In our regular Friday film segment, our critics give their takes on the latest Coen brothers movie and more. And finally, the filmmaker behind the new documentary 'Troublemakers: The Story of Land Art.'

Image: Sanders and Clinton debate. (screen grab from MSNBC)