Introduction
With the emphasis of social economy at the end of 20th century and the beginning of 21st century, the rhetoric of human rights and of equality between gender, races, ethnicities, etc., has entered into a new dimension. Activist groups supporting the equal rights and benefits for the vulnerable groups (people belonging to different races, ethnicities, religion, sexualities, people with physical or psychical disabilities or women) have supported this rhetoric through peaceful or violent manifestations. Their requirements have been integrated in programmatic documents and in some countries, like United States, such requirements have been implemented under the form of affirmative action. ...