Oh yay. Another thread about whether the Right of Anullment was the right thing to do, or whether it's a completely evil thing that should never be done. Haven't had a chance to discuss this in a while.

In the game, the Right of Anullment exists. It is the action of last resort when a Circle is deemed lost and irredeemable, and is invoked to prevent mages who have proven themselves dangerous from escaping the Circle and wreaking havoc on an innocent population. It has been invoked 17 (I think, may have been 16) times in the history of Thedas.
So, no matter what we, the 21st Century people playing the game think, it exists in Thedas, and it has its rationale.
Now, throughout DA2, we are confronted with many - and I do mean MANY - mages who are, in fact, blood mages and/or abominations. They attack Hawke, they attack Templars, they attack and kill citizens of Kirkwall. We are confronted with the fact that there is a Mage Underground, which is actively permitting and helping mages to escape from the Circle, which is illegal under the laws that exist in game.
We have one Templar actively shielding a known apostate from other Templars (yes, Thrask was shielding his daughter, a known mage, from being taken to the Gallows). Understandable from a personal standpoint, but illegal. We have a known abomination (Anders) walking around the City with impunity. We have a known blood mage (Merrill) doing the same. We have the First Enchanter actively aiding the research of a blood mage necromancer who is committing murder throught the City.
In short, there are plenty of reasons why a person playing this game, and thinking in accordance with the laws and rules of Thedas, may legitimately believe that the Kirkwall Circle is lost and irredeemable.
There are also indications of Templar abuse of the mages within the Gallows. There are questions of whether all those mages we see on the street are Circle mages who got out, or are apostates. In short, there are valid reasons why a person playing the games, and thinking in accordance with the laws and rules of Thedas, may NOT think that the Kirkwall Circle is lost and irredeemable.
Neither side is "right". Neither side is "wrong".
But claiming that people who believe the Right of Annullment was the right thing to do should be on trial at the Thedas equivelant of the Neuremberg Trials is so far over the top, and insulting, as to be absurd.