Found at SINC (in Spanish). Originally from the magazine Enviroment and Urbanization - author: David Satterthwaite, from the International Insitute for Enviroment and Developement.
Cities are not guilty of 80% of greenhouse gas emisions, just of 40%. The rest is divided between agriculture and deforestation (30%) and industry, rural affluent homes and electric centrals. The article ponders who are the consumers that demand so much electricity and products and it seems most of them are also a few wealthy people with wasteful lifestyles.
So, yeah, ecology and socialism go hand by hand. Let's sharpen the guillotine again... and get rid of two problems at once.