Are these symbolic apologies, pardons any good practically? They keep coming up especially in the colonial setting where governments apologize for what happened a few decades ago. It feels like a zero cost (apart from parliament costs i.e.) way to absolve their own personal guilt.
In the real world, does it actually help the oppressed?
(Who wants to place bets on an official apology to the families of Snowden/Manning coming up in a few decades after they have been caught and "justice delivered" to them.)