#BBCtrending: 'We are N' - global support for Iraq's Christians
1 August 2014 Last updated at 12:28 BST
With Isis militants still in control of Mosul in Iraq, Christians there are facing repression.
The Islamic State in Iraq and the Levant (Isis) took control of the city in early June.
Militants have marked Christian houses with the letter "N" in Arabic, to single them out for harsh treatment.
On social media, thousands have taken the symbol and reversed its meaning - using it to express solidarity with Iraqi Christians.
Produced by Alvaro A. Ricciardelli and Anne-Marie Tomchak
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