A more difficult dilemma arises with respect to the thousands of other wizards and witches who aided the Dark Lord’s cause in less obvious ways. We cannot sweep their complicity under an invisibility cloak. At the same time, it would be impractical and unwise to prosecute all of them. For every wizard who willingly committed crimes for the Death Eaters, another was blackmailed, threatened, or coerced while under the Imperius Curse. Some actively participated in hostilities against other wizards and Muggles; others merely provided financing or shelter. A campaign to punish everyone would get out of hand, creating a climate of suspicion and score-settling in which innocents are snared. The last thing the wizarding world needs is a witch hunt.
A legitimate process must hold the victors to account as well. Remember, under the ruthless Barty Crouch, the Ministry of Magic’s Department of Magical Law Enforcement was itself formally authorized to use unforgivable curses, including torture, against suspected Death Eaters, and innocent suspects were imprisoned after what were essentially show trials. When the ministry came under Voldemort’s sway, how many of its employees went along with the abuses it committed? What about the controversial decisions made by those who are widely seen as heroes, like Hogwarts headmaster Albus Dumbledore — for, say, his use of child soldiers? What of Harry Potter himself, who once used the torture curse?
One way to address these challenges would be to establish a Truth and Reconciliation Commission modeled on the experience of Muggle South Africa. Rank-and-file Death Eaters and collaborators — as well as those who fought against them — would be given the opportunity to testify about their actions and be forgiven for those less serious offenses to which they fully and honestly confessed. Such a process would not only be cathartic, but would also help establish a more accurate and complete version of these traumatic events and could, in turn, become part of Hogwarts’s curriculum. It would be important to ensure, however, that those who testify to such a commission tell the truth voluntarily, and not under the influence of Veritaserum.
A very nice tongue-in-cheek political analysis! I tend to agree with the points on magical creatures, torture, and Azkaban, though I’m critical of its characterization of Slytherin and emphasis on security. Wish JKR had discussed more of this in canon, honestly.