For example, in New Zealand, a couple of weeks ago there was a bit of a kerfuffle due to reporting on those of certain ethnicities being prioritised on surgical wait lists.
Those against it were arguing (validly) that prioritisation should only be based on clinical need.
However, the data over many years was showing that for people with the same clinical need, those from the minority ethnicities were not getting the same prioritisation.
So how do you resolve this? In an ideal world you will dig into the details, and figure out why that was happening, and resolve the underlying issues. But as with a lot of these problems with a human element there's no quick and easy solution.
Instead you get a "hack" like this to increase the weight of the minorities to even things out overall, hopefully to be removed later while you resolve the trickier issues.
Sometimes just targeting things to those in most need doesn't always fairly target across ethnic groups.
You can read a bit more detail about the NZ situation here: https://www.newsroom.co.nz/ethnicity-a-factor-in-surgery-wai...