The battle to retake Mosul from the rule of Islamic State is being live streamed on Facebook.
Several broadcasters are streaming the military operation launched by Iraqi and Kurdish forces and hundreds of thousands have tuned in to watch.
Including Al Jazeera:
As with other Facebook Live videos, users can like or react with an emoticon – a pretty bizarre feature given this particular content.
People are reacting to bullets and bombs with emojis.
A lot of people felt uneasy about the concept of live streaming a war zone:
Mosul, in Iraq, was captured by Daesh in 2014.
The city, the second largest in Iraq, was host to a so-called caliphate via one of its mosques.