system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Did the Dursley's ever experience any consequences of committing child abuse?

According to my sources, Harry Potter, the Boy who Lived, suffered depraved abuse both physically and psychologically at the hands of his would be carers. I have read records of Harry being regularly locked in a cupboard without food, water or sanitation facilities. There is also evidence to suggest that the Dursley child spent many years assaulting Harry while his parents looked on and even encouraged this behaviour, such as when the father encouraged his son to "hit Harry with your smeltings stick".

Has justice come down on them yet or have some long term abusers escaped justice?
gpt
Harry forgave the Dursleys, even though they didn't especially deserve it. As such he chose not to bring them out on child abuse allegations.

It is true that Harry's case was an emergency lodging situation and insufficient safeguards were put in place to ensure Harry's safety and well-being under the Dursley's care. The blame lies nearly as much with the wizards who put Harry there and watched him grow up.

Child abuse is almost unheard-of in wizarding Britain, and most wizards are not muggle-savvy enough to realize the extent of the issue in the non-magical world. The lay witch is completely unaware there is a muggle government institution dedicated to Child Protective Services, who no doubt would have been very interested in the Dursley's conduct, especially in Harry's pre-Hogwarts years.

However, the various powerful shields, distraction, and turning charms that protected Harry from Voldemort and Death Eaters at 4 Privet Drive also protected him from the intervention of any *other* interlopers, such as CPS. 

Dumbledore, being no fool, certainly knew the horrible conditions of Harry's life with the Dursleys. He knew that Harry deserved better. Unfortunately, the Dursleys were the only choice. It was better to be abused by them and sleep safely than taken by CPS and eventually killed in his foster bed by Voldemort. Not to mention that exposing Harry to adversity from the get-go was a sort of preparation for his intense trials.