Further to sp1814's post:
Some people take a very wide view of the definition of 'black'. Back in the 1980s, all of the staff, from the school which I taught at, attended an in-service training day. (Our school had very few pupils who were 'non-white' and we had requested this day to seek ways to promote racial understanding among our pupils).
The course was run by two gentlemen, of Afro-Caribbean origin, who seemed determined to spend the time lecturing our all-white staff on the evils of racism (which was 'preaching to the converted' anyway), rather than helping us to find ways to promote multi-culturalism.
At one point, I struggled to find a word which collectively referred to all people who were 'non-white'. The course leaders had no difficulty in offering a collective term. They insisted that the word I should use was 'black'. When I pointed out that I doubted that this would be a term with which, for example, children from some Asian countries would be happy with, I was met with an extremely aggressive response. I was told, extremely forcefully, that I must always refer to people from India, China and Japan as 'black'.
The following day, I asked one of my pupils what she thought about this. (Her family ran the local Chinese take-away). I specifically asked if she wanted to be called 'black'. Her response was extremely forthright but I couldn't criticize her for her choice of words because she said exactly what I was thinking!
Chris