Earlier quoted context omitted.
Civilizations clash. Some win, some lose. Should Gaul go back to the Romans? You would have the Earth remain completely static, and wherever your ancestors happened to evolve into humans that’s where you and your descendants live forever until the end of time? It’s ridiculous. Things change. Move on.
That’s a dangerous precedent to set. You’re essentially egging on today’s generation to “clash back”. Colonialism isn’t the same as ancestral predator prey mechanics. Or, that we should reverse every unjust war waged in the world. Some are just blatantly brutal. Simple. We owe it to our species to recognize mistake, apologize and make repairs. Would Britain really say “it’s ridiculous. Things change. Move on” for for…
And what did that do for Turing? He's still castrated. He's still dead. Were the people who apologized even the ones responsible? They must be mostly dead now too. Was there any serious concern in 2009 when the apology was issued that the UK was going to continue castrating gay people?
That had far more to do with present day politics and empty gestures to appease people like yourself than with making any repairs or apologies to anyone, not that such gestures mean anything to dead people anyway.
The people who used to own the diamond and could theoretically have any rightful claim to it are likewise dead, as are the people who stole it. It is where it is now and moving it somewhere else won't change the past. India's economy just eclipsed the UK's and is on the rise, while the UK is declining, so they'll have the last laugh anyway. Maybe they can buy it back at a yard sale when King George needs to pawn it to pay the rent on Buckingham Palace.