In the not-too-distant past we thought we had the major problems solved - I used to sing a song called 'Te Colout-Bar Strike, by a Lono Railwayman who wrote it about the time the Kings Crosss Railway workers went on strike to prevent the employment of West Indian Labour
I was told quite firmly that there was no need for such songs any more because that type of "prejudice and ignorance" was "a thing of the past"
I doubt if that advice would be given today (just as well I haven't forgotten the song)
Jim