How will mistrial affect other Freddie Gray prosecutions?

How will mistrial affect other Freddie Gray prosecutions? More

The trial for the first officer charged in the death of Freddie Gray has ended in a mistrial. The jury deliberated for 15 hours over three days before a judge in Baltimore declared a hung jury in the case against Officer William Porter. William Brangham joins Gwen Ifill from outside the courthouse in Baltimore for an update.

AIR DATE 12/16/15