This is a review by Galen Strawson of the book by Nick Hume. I agree with Strawson's thoughts about the cause of outrage and offence not being narcissism but "

This is a review by Galen Strawson of the book by Nick Hume. I agree with Strawson's thoughts about the cause of outrage and offence not being narcissism but "something vastly more toxic: righteous indignation felt on behalf of others". "righteous indignation felt on behalf of others – typically a group with which one identifies or sympathises. ... It’s precisely because such righteous indignation is not narcissistic, and is not experienced as mere self-concern, that it comes with a feeling of absolute purity – purity of cause and of justification – that seems to license absolute violence.... the anger is cleared to express itself without inhibition." Group psychology - The defence of the group will always come before the protection of the self. Having a group behind you allows your actions to be justified - no matter how badly behaved, aggressive or morally wrong - because the group justifies these as right and good.