For reasons not entirely clear to me, Martin Durkin just posted a link to his 2011 blog post about just how posh environmentalists tend to be. If you haven't read it before, you really, really should.
It is not exclusive, expensive delicatessens, but rather the wicked low-cost supermarkets frequented by everyday folk which they find repellent. It is a commonly heard complaint from Greens that things ‘aren’t expensive enough’. The ‘rebels’ down from Eton for the anti-globalisation rallies threw bricks through windows – but not the windows of high-class restaurants. Instead they smashed up and ransacked a working class MacDonalds when they marched down Piccadilly. It is not the luxurious Heals furniture shop that makes them angry, but the proletarian IKEA, with its affordable sofas and lamps.