These guys were surely an exception.
The Guardian and others have published a story about the ethics of the "green consumers":
The study was just published at Psychological Science:
Do green products make us better people? (full text, PDF)Nina Mazar and Chen-Bo Zhong of Toronto have found out that people wearing the "halo of green consumerism" are less likely to be kind to others and more likely to cheat and steal. After a randomly chosen subset of the 90 undergraduate students (paid $5 for the experiment) became "green" by having bought green products, they became far less ethical. The researchers were surprised by the findings: at least one of them describes herself as a green consumer. The likely mechanism explaining the data is known as "moral balancing" or "compensatory ethics".
As Dieter Frey, a social psychologist at the University of Munich, said, the findings fitted patterns of human behaviour: "At the moment in which you have proven your credentials in a particular area, you tend to allow yourself to stray elsewhere."
The researchers used a computer game allowing people to make a profit by cheating i.e. making a trick and by hiding the decline of the money inside the game i.e. by lying about it, a combination that is referred to "stealing". The green consumers were six times more likely to steal than the proper consumers - a huge signal (they calculate a 99.9% confidence level that the difference couldn't be due to chance). The green individuals also didn't want to share money with others.
The Guardian mentions Al Gore - and his lies about the electricity bills - as the ultimate template for the unethical human scum. No specific proposal how to protect the society against the green types has been articulated yet.