My favorite is the giant Allied aviator holding his fist over Treviso.
On a side note, if you have seen neoclassical liberals discuss Fascism in any serious detail then you have likely seen them mention that the Fascists abhorred abstract art. However, it is pretty clear from some of these examples that that was a rule made to be broken.
(Tagged as NSFW for some nudity.)
Related: Italian WW2 Propaganda Posters
I’ve seen my fair share of memes on the si si si banner