Art public et débat démocratique : expression vs vandalisme

Read the following prompt and write a short, cohesive argument (150-200 words). 'To what extent can public art, such as murals depicting controversial political figures or events, be considered a form of democratic debate rather than mere vandalism?' Your response must analyze the tension between freedom of expression and the preservation of urban order. Incorporate the concept of the 'public sphere' ($S_{public}$), defined as a social space where individuals assemble to discuss matters of societal concern, represented by the intersection of artistic expression ($A_{exp}$) and political deliberation ($P_{del}$), denoted as $S_{public} = A_{exp} \cap P_{del}$. Use advanced vocabulary and complex sentence structures, including connectors like 'notwithstanding', 'subsequently', or 'insofar as'.