【明報專訊】22 May 2017 was a sad day to music fans in Manchester, the UK. As soon as Ariana Grande's concert finished, a suicide bomber detonated a home-made bomb inside the foyer area of Manchester Arena, killing 23, including the bomber, and injuring over 100. We have heard moving stories of strangers helping strangers in such circumstances of extreme horror and stress and supportive activities were organised promptly to help victims and their loved ones.