I don't give a damn about punishment.
All I care about, is how to make the abuse stop.
Just take away their power to perpetrate further abuse. In whatever way is the most effective, with the least possible drama. Period.
Punishment may serve as a deterrent for further bad behavior, but when the supposedly good guys are actively causing suffering, that's cultivating poison. No matter how justified, indulging revenge is dangerous. There's a bad gray area where justice starts to overlap with sadism and the risk of people becoming the very thing they hate-- again.
Punishing most of the population of a whole country is not particularly feasible, tends to hurt a lot of innocents along with them, fosters more solidarity among them built on shared resentment-- what, like some kind of mass spanking is gonna teach anybody a real lesson?
If Netanyahu and his nastiest ministers got stripped and tossed unarmed into the camps they created, they'd probably get torn limb from limb. How many of those who participate in that frenzy would come out of it feeling better? How many might actually feel shame or regret afterwards instead?
There's no easy answer. Is there ANY justice system on earth that's ever been designed around the needs of victims or how to get things running properly in the aftermath? How many studies have even really grappled with this stuff?
How does a busted, abusive society get better?