In Afghanistan, torn apart by decades of war and a bloody insurgency, Muslims took to social media to change their profile pictures to the French tricolour, despite the fact that Facebook had no Afghan flag filter for when their own lives were shattered by bombs and guns.
Muslims across the world have condemned the attacks on Paris in a heartbreakingly empathetic response that has been sustained over the six days since gunmen killed 129 people in a bloody jihadist rampage across the City of Light.
Aftab lost her 16-year-old son in Pakistan's deadliest ever extremist attack, a Taliban massacre at a school that killed more than 150 people, mostly children, in December last year.
But bitterness and despair have surfaced too, from those who live every day with the horror now gripping France.
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"We have tasted death for many years," Iraqi Samara al-Qaisi wrote on Facebook.
"We have been watching horror movies in Iraq; we have tasted this for 12 years, and no country moved to help us," she said.
"Do they show this kind of sympathy with us?"
The bitterness is undercut by anguish, however, and there has been no outpouring of anger as there was in the aftermath of January's attack on the Paris offices of satirical magazine Charlie Hebdo.
That attack, prompted by the magazine's controversial cartoons of the Prophet Mohammed, spurred protests by Muslims angered by what they saw as Charlie Hebdo's blasphemy including in Muslim-majority Indian Kashmir.
European Muslim leaders were also united in condemning what Turkey's top cleric Mehmet Gormez said in an open letter to G20 leaders was "not an attack on France, on Europe or on the West; it is an attack on every human being that cherishes world peace".