To proof that we are more then just a bunch of capitalist pigs joined at the hip, the EU is always trying to protect the little people and their quaint little ways.
Following this line of thought, someone, at some point realized, that even though there are entire forests in Finland being cut down because we can't decide on a common administrative language already, that Europe in fact has even more Languages then just the National ones (Something that was of course obvious to anyone that ever tried to make do with jumbled Spanish in o.a. Barcelona).
To get to the bottom of this the Manifest of regional and minority languages was established, which a bunch of countries then signed.
In a nutshell; Once a country has acknowledged a minority language within it's borders, this language and it's speakers get certain rights, to protect and nurture it. Meaning, media rights, schooling, yada yada.