Feicim an abairt "is í a thír féin is measa ag sárú chearta an duine" anseo: https://www.focloir.ie/en/dictionary/ei ... %A1r%C3%BA

Cén fáth tá séimiú ag "cearta" ansin?

It doesn't fit with any of the rules I see at https://en.wikipedia.org/wiki/Irish_initial_mutations , but I'm missing something.

GRMA!

cearta an duine = human rights, lit. the rights of the human being
It is a definite noun phrase (the rights ...) and definite nouns are lenited in genitive case.

So: sárú chearta an duine = the violation of the rights of the human being


The according example of the Wikipedia article:

Ah ok!

I didn't realise that sárú awas working as a noun here, so it makes the next bit genitive.

Thanks, a Labhrás