Panic, blood and despair during the attack in Moscow: "Fleeing we stepped on the dead". The selfies that began to circulate on social networks minutes after the attack on the Crocus will be forever etched in our minds.

And also the video in which a completely terrified man crouches to hide between the seats in the auditorium where the concert was going to take place. "I'm completely terrified, I feel like my whole body hurts," laments Semion Khraptsov.