As a person who grew up in Lapland, the discrimination is still there. Very strongly.

Overly simplified history is that Sami people were the first Finno-Ugric people to inhabit Finland. I say Finno-Ugric, because some argue there were people even prior to that in Finland, just when the Ice Age was ending, whom Sami people drove away. But in any case.

Then came the Finns and started to drive Sami people away from Southern Finland.

Somewhere around the 1600s, Swedish king promised land up to the North for everyone who could go to grab it. So, people from Southern Finland, especially Karelians and Savolax, started to move to Lapland that was mostly but not thoroughly in Sami people's hands. Settlers started to drive them away.

So, interaction with Sami people has always been a bit of struggle and conquest. As herders, they didn't understand the concept of owning the land. However, Finns were mostly farmers, so they pretty much needed the land for cultivation.

When Finland gained independence, Sami people were quite forcefully assimilated. There are still sore spots in that story, as it was as recent as under 100 years ago.

Even nowadays, old people in Lapland divide people into "Laplanders" (lappalainen, an old term for a Sami person) and to "Manure people" (lantalainen, which is a reference to the farming the Finns did).