Karine Polwart - Sorry

I first heard of Karine from a folk sampler I picked up in Edinburgh a few years ago called "That's Proper Folk." I really love her voice. Last night I was at the Nick Drake concert and I recognised her voice so I had to surreptitiously check my ipod to check it was the same person. She's just as brilliant live.
When I looked this song up on youtube, I found some comments about how this song is about Jean Charles de Menezes, who was killed by police officers on the London Underground.

"It's not enough these days to say sorry, sorry won't pay for this loss."