questions on The Death of the Object

How was avant-garde a useful vehicle for the radicalism of the late 60's art?

The newly emerged ideas of society and radicalism could utilize the avant-gard as a medium to express sentiments freely, without contrains of tradition or the past. But Futurism and Cubism, looking at one object or idea at many angles and instances, could also have been useful in expressing activism towards the establishment. So I wonder if it was just a product of the times.

How did patriotism and radicalism come together in Magrittes depiction of two femur bones painted with the Belgian Flag? And why was there such a move to depict radical juxtapositions of objects or ideas in single pieces of art?

I think to place things in their social context, artists such as Magrittes, violence and pessimism of WWII influenced painters, as well as the minimalist pop and conceptual artists. This could be seen to have led to simple representations of unrelated and disjointed objects. This may not have been simply for shock value, but to exemplify that radical change could seem eerily normal.