In the seventh Harry Potter book/movie, Harry, Ron and Hermione broke into Gringotts. They didn't do it in secret. Everyone knows about it.
Were they ever punished for this? Or did the ministry show mercy because their purpose was noble?
In the seventh Harry Potter book/movie, Harry, Ron and Hermione broke into Gringotts. They didn't do it in secret. Everyone knows about it.
Were they ever punished for this? Or did the ministry show mercy because their purpose was noble?
No they weren't.
Once the war ended, none of them faced any sort of trial (that we know of). Harry and Ron were subsequently appointed to the post of Auror at the Ministry of Magic itself and Hermione returned to Hogwarts.
My guess is that considering the young age of the protagonists, the extenuating circumstances involved, the fact that they'd almost single-handedly saved the world and the general lack of "public interest" in prosecuting (not to mention the poor treatment of the goblins by Voldemort's death eaters) that no-one was willing to charge them with a crime.
Also, as @Rojo has pointed out, the next Minister for Magic was Kingsley Shacklebolt, a member of the Order of the Phoenix. Since the Minister evidently has the ultimate say over prosecutions, it hardly seems likely that they'd face any charges with one of their key allies in the role.
Considering the Malfoys faced no punishment for their crimes after they switched sides and abandoned Volemorts cause, it would seem highly unlikely that 3 people who were fighting against him would face any sort of punishment.
Not by the Ministry. The Gringott's goblins are responsible for their own security and are quite capable of handling their own affairs, thank you very much.
For example, they have a system that will imprison a thief inside an impregnable vault and seal him up in there without sustenance for up to ten years. Does that sound like the kind of thing the ministry would approve of? (Well, considering Azkaban and the dementors, maybe.) And they were keeping a live dragon in London (well, under London) against all the rules. I don't think the Ministry can muster sufficient authority to discipline Gringotts and being the kind of bureaucrats they were, they were probably happy to see Gringotts embarrassed.
What the Gringotts goblins did to the three I don't know. But they were heroes to the wizarding world and the goblins are already disliked by many (reasonable and non-Death Eater) wizards, so Gringotts, already smarting under the bad publicity of two break-ins, probably had enough PR savvy to just want to bury it. (Still, if I were Harry, I'd send someone else to Diagon Alley to make withdrawals from my vault.)
None of the above is Canon, but it just makes sense.