Manchester downright refuses to commemorate the 1996 IRA bombings – it's a bold political statement.
History shows how the act of remembrance has changed over time.
It is probably not a surprise that a terror attack can have a major impact on people's mental health. But what sort of effects are common, and how long do they last?
The death of the Brazilian electrician at the hands of the Metropolitan Police was a notorious case of mistaken identity. The same thing would probably happen today.