Protesters in Iran are using social media to share with the world what’s happening in their country, where journalists have little or no access.
But fake news is flooding the conversation and tainting the truth.
A video posted on Twitter on New Year's Eve allegedly shows Iranian forces opening fire on protesters.
But it's actually from the 2009 protests in Iran.
With a quick search online you'll find the same video posted on YouTube seven years ago in 2011.