One reason could be to explore the concept of 'what if'. What if the villagers' fear and hatred for Naruto overcame any chance of redemption or acceptance? It's a way to create a dark and alternate storyline.
One possible reason could be fear. Naruto has the Nine - Tails inside him, and the villagers might be so afraid of the power of the Nine - Tails getting out of control that they decide to take extreme measures. They might see Naruto not as a person but as a potential threat that needs to be eliminated.
At first, Naruto might be confused and hurt. He has always wanted to be accepted by the villagers, so being beaten by them would be a huge blow. He could become angry and vow to prove himself to them.
There are some fanfics with such dark themes. In these fanfics, it might be due to the villagers' long - held fear and prejudice against Naruto because of the Nine - Tailed Fox sealed within him. They might see him as a threat and take extreme actions. However, these fanfics often deviate from the original positive message of the Naruto series which is about acceptance and friendship.
His character could become darker. The once - cheerful and optimistic Naruto might turn cynical. He would start to question all the values he was taught about loyalty and friendship. For example, he might see his past friendships as a form of manipulation by the village. This new - found bitterness would be a major shift in his character.
In the Naruto fandom, such a fanfic would be very out of character for both Naruto and Sasuke. They are comrades and friends with Sakura. However, some dark or AU (Alternate Universe) fanfics might explore extreme and unorthodox ideas. But in the main canon, they would never do this as they have a deep bond with Sakura. Naruto has been friends with her since childhood and Sasuke, despite his aloofness, also values her in his own way.
Hinata would be devastated. She has always had deep feelings for Naruto. She might lose all hope and become a shell of her former self. Also, Kakashi would feel a great sense of guilt. He was Naruto's teacher and protector in a way. He would probably question his own abilities and actions that led to this situation. And for the village as a whole, it would soon realize the mistake they made when they face new threats without Naruto to protect them.
Sasuke would probably be enraged. He has his own sense of justice and loyalty, and seeing Naruto in such a state because of the villagers would make him want to take revenge on those responsible. Sakura, on the other hand, would be heart - broken and would immediately try to heal Naruto using her medical ninjutsu skills.
Sakura would be shocked and immediately try to protect the villagers. She might use her medical ninjutsu to heal any injured villagers and then try to subdue Naruto. She would probably be very vocal about how Naruto's actions are wrong and try to bring him back to his senses.
It might be due to a miscommunication. Humans and Pokemon don't always understand each other perfectly. If the Legendary Pokemon misinterprets human actions as hostile, it could lash out. For example, if a group of humans are doing some large - scale construction near its home and it thinks they are about to invade, it may attack.
Naruto would probably start by recruiting his friends and their families. He knows them well and trusts them, and they share his values. He could also offer a new start to people who have been ostracized from other villages. His reputation as a hero would attract many who are looking for a better place to live.