Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings. Many of those at the concert were young girls, there to capture fond memories of their experience on their mobile phones.When terror struck, those cameras were still rolling.What was meant to be a night to remember, is now one they will wish to forget. On Monday night, a suicide bomber targeted young concertgoers attending an Ariana Grande gig in the Manchester Arena.The ruthless attack claimed the lives of 22 people, including children, with 59 injured. Footage from those concertgoers uploaded to social media has formed a horrifying picture of the night terror struck Manchester.This is what they saw.