[Something] I explore in the Potter books [is that] a sense of righteousness is not incompatible with doing terrible things. You know, most of the pe… - J.K. Rowling

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[Something] I explore in the Potter books [is that] a sense of righteousness is not incompatible with doing terrible things. You know, most of the people in movements that we consider hugely abhorrent, many many many of the people involved in those movements understood themselves to be on the side of righteousness. Believed they were doing the right thing. Felt themselves justified in what they were doing.