absent I would imagine everybody that lives in an urban environment - particularly a big city - and who uses the transport system (both of which I and my family do - my son commuting during the rush hour every day) are well aware there is a risk of being involved in a terrorist attack. I'm fairly sure that people don't think "Oh well, I haven't done anything to upset [whatever group] so I'll be all right".
(TeL-gram @HARLEY40)Buy c o k e and w e e d in Melbourne, Australia
(Tel/Gram @Harley40)Buy c o k e and w e e d in Sydney, Australia
(TeL-gram @DevonDV)Buy c o k e and w e e d in Gold coast, Australia

