The wizarding press would go wild. There would be all sorts of rumors and speculations. Some might blame Harry for being too focused on his work, while others might think Ginny was too independent. The public's view of the 'golden couple' would be shattered, and it could have an impact on the morale of the wizarding world, especially those who saw them as a symbol of hope after the war.
The wizarding community at large would be divided. Those who have always been skeptical of Harry, like some of the pure - blood supremacists, would use this as an excuse to smear his name further. However, Harry's true friends would be desperate to prove his innocence or, if he is actually guilty, to help him come to his senses. Ginny's friends, like Luna, would be worried sick and would do whatever they could to get her back safely.
Some might be angry, thinking he's abandoning his responsibilities. The Ministry of Magic might try to persuade him to come back or even use force if they thought it was necessary for the safety of the wizarding world. His friends, on the other hand, would likely be sad and try to understand his reasons. They might also try to convince him to return, as they know how much he means to the fight against evil in the wizarding world.
Many of Harry's friends would be deeply saddened. Hermione would try to mediate and see if there was a way to save the marriage. Ron, being Ginny's brother, would be in a difficult position, torn between supporting his sister and his best friend. The younger generation who looked up to Harry and Ginny's relationship might feel disillusioned.
Some in the wizarding community might be shocked. After all, Harry and Ginny were seen as a power couple. There could be a lot of gossip and speculation in places like the Leaky Cauldron. People might take sides, with some blaming Harry for not being able to hold his family together, and others understanding that things are more complicated than they seem.
Some students at Hogwarts might be disappointed. They could have been secretly enjoying his fanfiction works and were looking forward to new stories.
They would be devastated. Harry has many friends and allies. People like Hermione and Ron would be heartbroken and would probably seek revenge. The Hogwarts faculty would also be deeply affected. Dumbledore, if he's still alive in the fanfiction, would feel a great sense of guilt for not protecting Harry better. There might be a split in the wizarding community, some believing the Dursleys were acting on their own, others suspecting a darker conspiracy.
There would be a great deal of shock and confusion. Many would start to question everything they had believed in. Families would be divided. Some might think that Harry had been corrupted by Voldemort's dark magic and try to find a way to reverse it. The Ministry of Magic would be in a panic. They would try to come up with new strategies to deal with this new threat. Teachers at Hogwarts would be worried about the safety of their students. And the Death Eaters, while initially happy to have Harry on their side, would also be suspicious of his motives and loyalty.
The wizarding world would likely be in shock. Harry is seen as a symbol of hope against Voldemort. His death at the hands of Vernon would be a huge blow. There would probably be a lot of anger towards the non - magical world for allowing such a thing to happen.
There would be shock and disbelief. The wizarding world has always seen Hogwarts as a symbol of hope, knowledge and safety. If Harry destroys it, many would be in denial at first, thinking it couldn't be true. Wizards and witches from all over would come to the ruins, trying to figure out what had happened.
The wizarding world would be in shock. Harry is seen as a hero, and for him to kill Draco, even if Draco was from a 'less popular' side, would be a huge scandal. His friends like Hermione and Ron would be deeply conflicted. They would be torn between their loyalty to Harry and their disbelief at his actions.