I want to come back to Guy Debord; because more than any other figure I have talked about I think he is important to my interests.
The idea of 'the suppression of art', that like the Dadaists', the Situationists were concerned with, is important to an understanding of the relationship of politics and art. The Situationists were against the categorization of art and culture as separate activities from society, preferring instead to include them in everyday life. They saw this categorization as another expression of capitalism and the market. The Artist and The Audience can be seen as The Producer and The Consumer. Fundamentally the Situationists were against work - they saw work as a barrier restricting the natural and instinctive creativity of people. Everybody should be creative, everyone can create art.
There are elements to the Situationists aims that ring true and others that do not. I agree that the categorization of art and culture as separate to society is an expression of capitalism - art and culture can exist happily within society. Taking the same forms and being created from the same means of production as any other 'thing'. An art work is political simply because it exists within society, no attempt should be made to avoid this. The concept of the 'original' is to keep it separate from society. With the concept of the 'original' there is the baggage of the spiritual, religious object of divine importance.
I am unsure about the Situationists claim that everyone is instinctively creative and that work inhibits creativity. But haven't yet come to my own conclusion about this.