There is a clear moral and social justice case for taxing the rich. Max Rashbrooke, and others, have done a thorough and admirable job of outlining why wealth inequality is unfair, self-perpetuating and destructive of the social fabric essential for a well-functioning society.
There is another case for taxing the rich and reducing inequality that is often missed – the ecological perspective. Even if everyone had at least enough wealth to live well, we would still have an existential threat on our hands if the rich continued to control large amounts of financial wealth. Both the moral and ecological arguments for redistributing financial wealth are connected. Without ecological security there can be no social justice on a finite planet, and without social justice there can be no ecological security on an over-populated one.
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