film \fiction\ and politics

seeing Chavez walking proudly, smilingly on the tapis rouge in Venice cote a cote with Oliver Stone I got struck by the way fiction in a filmed form interferes with the 'real politics'. How much of the political imaginary is, nowadays at least, made of filmic images about our past, present and future? Oliver Stone with his JFK, W. and now South of the Border (which started as a bio of Chavez and was transformed in a look at the "new left in Latin America) or Michael Moore with his "documentaries" can attest to this fictionalization of our realities.