Murray is a slur used to describe Maori in a derogatory way. Sounds similar to "Māori", New Zealand aboriginals.
The word Murray is a racial slur that has been used historically to degrade and dehumanize maori. The word is still used by some people for this purpose, and it is seen as offensive and hurtful to maori. If you are unsure about whether or not it is appropriate to use the word Murray, it is best to err on the side of caution and avoid using it in any situation.