But there has still been no apology for the closing of ranks to protect the guilty, and for the cover-up. Those were the things that probably caused the worst damage, and led to the most deaths down the years. And those are the things that still continue to shape the way killings by agents of the state are dealt with.

Not just in the UK, of course, but if this pattern is ever going to change, this is as good a place to start as any.