Ira thought about the question asked by the professor. In what situations would use of Unforgivable curses be acceptable?

It was then she remembered what she had read about the Great Trio in the Hogwarts History. Didn't they too use the Imperious and Cruciatus curse? She answered, "Professor, in the battle of Hogwarts, the Trio and their teacher also used the Imperious and Cruciatus curse, but it was for good. So what I basically mean, is that in events of a fight of good and evil people, use of Unforgivable curses should be allowed for the good people..." Ira hoped she was making sense and was able to convey what she really thought. She continued, "And the good people do not enjoy the effects like pain and suffering, but instead they use it to remove evil from the world. So in such situations, they can't be considered Dark.."