I saw many netizens say that there is no pure villain in One Piece, and some just have different beliefs. In my opinion, everyone has a lamentable story behind them, even Mingo, who stomped on the soles of his feet, has a different past, and Aaron, who occupies the coco coconut village, has an immeasurable humanity behind each story.

But even if they have a tragic experience, no matter how unfortunate, someone can avoid the tragedy, and what they choose is revenge on society.
In the eyes of ordinary people, the Straw Hat Pirates and all the pirates that prevailed in this era were a heinous being. They believe that pirates are evil and the navy is righteous. But in One Piece, what makes me feel the most shocked is often those "extremely evil" pirates who uphold good humanity to become the light of others.
As far as Mingo is concerned, we can't define the good or bad of his human nature. A person's human development is largely determined by the experiences and dispositions they have. As Mary Joya's Draco, Mingo enjoys the privileges and wealth unique to Draco, and at the same time, he acts arbitrarily with the rights he has.
But his father gave up everything he had and chose to live like a normal person, precisely because of his father's decision Mingge experienced a very miserable childhood. The death of his mother and the fact that he was abused by the Draco people tied to the city wall to carry out atrocities were not only the living environment but also the gap in his inner psychological changes, which created Mingge's lamentable past.
Secondly, Aaron, who occupies the cocoa coconut village, is also a character who makes people sigh, and the Aaron who first appeared in the eyes of the audience is greedy, believes that the fish people are the highest race in the world, and has a great hatred for humans. I think that no one who appears in the audience's field of vision will not hate him for occupying Nami's hometown.
But in the Fishman Island chapter Aaron's hatred of humans is not without reason, and the humans on Fishman Island also hate the Fishman race, and humans and Fishmen cannot achieve relative unity. In addition to the long-accumulated contradictions between the Fishmen and humans, Tiger's death is also a great inducement. For Aaron, Tiger has always been a big brother in his heart, and although he thinks that Tiger wants humans to live in harmony with fish people, he is extremely sad after Tiger's death.
The same experience of being insulted and insulted and the same is undoubtedly sad.
But Corazon, who lives in the same environment and has the same situation as Mingo, has a different attitude towards the world. He did not hate the world like Mingo, and did not choose revenge on society like Mingo, but chose justice. In the face of Luo who hurt himself, he was distressed by Luo, worried about Luo's condition, and took Luo everywhere to seek medical treatment.
Shihei, who also lives on Fishman Island, does not blame humans for the deaths of Princess Otohime and Tiger, but upholds the belief that Princess Otohime and humans live in harmony. They have the same experience and the same environment, but Mingo and Aaron choose a more extreme path, and Corazon and Shihei want to make the world a better place and avoid the recurrence of tragedy.
For Mingo and Aaron's evil behind, it seems to make sense. Maybe for them the dirtiness of the world has abused them, and it is reasonable for them to feed back to society with the same atrocities.
But it seems to me that all the unhappiness they have endured, we can feel sorry and lament for such a tragic encounter they have experienced, but to a large extent, the sadness they have experienced cannot be a reason or even a bargaining chip for their evil, and in the face of their own heavy and sad experience, what they have done is to turn their anger on innocent people and the weak.
As far as the above is concerned, in my opinion, Mingge is an obvious evil person, and if he had not lost his Draco identity, he would have been even more vicious and arrogant.
People often evaluate or even define whether someone is good or bad because they have done something harmful to their own interests, but at any time the tragic experience we experience is not enough to become a capital that threatens society.
In the world of One Piece, we can't deny their experience but at the same time we can't accept their evil deeds, and such character building will also make their characters more three-dimensional, and they can truly feel the emotions of the characters.