As there hasn't been any new modern architecture built in the historic center of Rome since Mussolini's time I think the Ara Pacis Museum became a lightening rod for issues that were not directly related to the building itself.
Quotes about mussolinis (2 Quotes)
We, unlike Nazi Germany or Mussolini's Italy, have never stopped being a nation of laws, not of men. But witness how men with motives and a majority can manipulate law to cruel and unjust ends.