Could an example be “Knowing why someone died”?
I'm thinking it depends on the circumstances.
For instance, if there is a possibility of criminal involvement, finding out "why somebody died" might be not just a right, but an obligation. That's what criminal forensic investigation is all about.
On the other hand, say an obituary appears in the newspapers announcing someone's unexpected death, and the cause of death is not listed in the obit. It could be that the next of kin or the deceased him/herself would not have wanted people prying out and discussing the details.
Prying into that sort of thing just to satisfy curiosity is, I think, unjustified. Gossip is wrong, and Scripture says we will have to account for every careless word.