There is a difference between 'helping someone' and 'being their saviour omg'. If White Man encounters Coloured People and Coloured People have been Totally Helpless so far and only White Man can save them from their helplessness, that's quite likely to be a very icky message. It implies that White Man is so superiour, without him Coloured People would be Lost Forever

If Coloured People have been fighting pretty well so far on their own and White Man just happens to be able to be add to their fight, it promotes an equality of power and importance.

This is of course a very abstract description. The context of the specific story has a big influence on the message. Is White Man shown as superior by himself or does he too need help from someone else to be able to Save The Coloured People? Do the Coloured People ask White Man for help, or does he just impose himself on them? What reasons does White Man have to help the Coloured People?e etc.