Black Magic is a slur used to describe Blacks in a derogatory way. "It has always fascinated researchers how the black folk manage to get there hands on grog money daily." Specific words of the original submitter, of which I am fascinated by.
The word Black Magic is a racial slur that has been used historically to degrade and dehumanize blacks. The word is still used by some people for this purpose, and it is seen as offensive and hurtful to blacks. If you are unsure about whether or not it is appropriate to use the word Black Magic, it is best to err on the side of caution and avoid using it in any situation.