So if I am reading this right, a person is justified in their view that they can kill a whole town, if that person was tortured by a handful of neighbors? So would you be fine if you, your parents, all your other loves ones and many more would be killed or tortured just because a bad person decided to torture someone, which you dont even know?

Yes her past is bad. Yes all those people involved should be punished..but no the rest of Doma is not at fault for that. You cant just free someone from their crimes just because they had a bad past. If everyone would react like her we would have a society full of revenge, murder and other horrible things..thankfully people like that dont get a free pass and land in prison for their crimes..

Even if we see it from her perspective she is still not justified simply because she does not only torture those that did those bad things to her but also people that she had never met before that. I mean if you argue like that, there will never be a character that is not justified for the stuff they are doing..