Wasn't it Bertrand Russell who used the phrase 'The superior virtue of the oppressed'? There is always this temptation amongst people that see themselves as progressive, and on the side of the weak. They demonize the powerful, but over-romanticize the weak. I think we should recognize that. If you take seriously the idea that people are always going to use truth claims as a means of powering their own agenda, that is going to happen whether you're weak or powerful.