Sometimes you read something and you are really taken aback by just how little you know. I came across this paragraph after following links on entirely different subjects:
I saw a slave ship — a dhow — in Dar-Es-Salaam harbour in 1955. Saudi Arabia only abolished slavery ten years later. I have a fury against any religion that justifies slavery. It is an abomination and still widespread.
That was a response to a question posed to John Rhys-Davies, the actor who played Gimli in The Lord of the Rings. Here’s the source. I was looking up something totally unrelated and that just jumped out at me.