Iran protests: What we know about the varying death tolls

What is the death toll from the protests in Iran? Since the demonstrations broke out against the theocratic regime late December, the number reported has continued to rise...though it has been harder than ever to verify an exact count with an internet blackout in the country hindering communications. As of 19 January, two main rights groups confirmed nearly 4000 deaths, though the figure is likely a significate underestimate. Vedika Bahl goes through what we know in Truth or Fake.