Well that's easy to say when it isn't. It is my tax pound and I don't. I don't support the posthumous pardon at all, and those calling for the posthumous knighthood are getting ridiculous.
Everyone recognises the value of Turing's input to both the war effort and greater modern life, but sadly the man took his own life. Arguing over whose fault it was it pointless. Pardoning him now does nothing for him. It won't change the impact of his work and it won't produce the work that we lost because of this. Yes the law in the 1950 by todays standards was an ass, but that was the law at the time and the punishment was the punishment. Yes, through 21st century eyes it is abhorrent and I'm extremely glad that the law has changed and what happened to Turing doesn't happen any more, but... It's time that we move on.
To me, it's important for a society to explicitly acknowledge mistakes.
FWIW, I'm American, and I wish that our government would formally acknowledge people who have clearly been affected by less than fortuitous circumstances.
http://www.bbc.co.uk/news/uk-22790037
I would also support compensation for anyone who was a victim of extraordinary rendition through the UK and criminal prosecution of anyone who aided this ghastly practice.
Suppose however that the Maori had a socioeconomically superior position. Would it still be the right thing to do to pay them for past misdeeds? Technically, I would say yes. Practically, probably not.
As an illustrative example, consider the way Chinese immigrants were treated during the gold rushes ~1850-1900. Though the situation is somewhat different; I'd contend that if Maori were being compensated only for past misdeeds, descendants of Chinese immigrants from that time should be also. (But of course Chinese people are in a higher socioeconomic group than Maori).
[Warning: speculation rife in the following paragraph] So, the NZ government pays Maori because it's a politically acceptable (politically beneficial, probably) way to provide Maori with some stimulus to increase their socioeconomic standing. I expect that had Maori been able to summon the socioeconomic standing (and corresponding political power) earlier they would've received compensation earlier. Had they never had a relatively lower socioeconomic standing they may never have felt aggrieved as a result of wrong-doings and not pursued payment at all.
An aside: Another complicating factor in the NZ situation is that the legal basis of Crown ownership of NZ is somewhat shaky. There appears to have been some "mistranslation" that occurred in the Treaty of Waitangi, meaning Maori believe they are the sovereign owners of NZ, while The Crown believes it is.