Yeah… the US condemnations of the Axis powers is what really turned the tide, joining into the war later was really a post-script right?
Nazi were big on symbols. And very good in their use of them for propaganda. Yes, they played role in getting support for their project.
And allies were engaged in that too.
Counterpoint: the Cold War was pretty much all about geopolitical symbols, e.g. the Berlin Wall, nuclear deterrence, the Space Race, counting Olympic medals.