Long years ago, a long time before I realised that humans are not divided into races, and we're all just people, I was around three, and was at a bus stop with my mother, in Ireland, and saw my first black-skinned man.

"OH, THE POOR MAN!" I roared. "WHAT HAAAAAPPENED TO HIM???"

He was really, really angry. I suppose it should have taught me to keep my mouth shut, but it didn't.