I think what air was saying is that in the US, propaganda, of any sort, cannot be a crime, due to the 1st amendment to the US constitution. That is freedom of speech.
Russia is way more open in this perspective.
I'm not sure how anyone could say Russia's 'way more open' with a straight face[1].
[1]: http://www.cnn.com/2013/04/24/world/europe/russia-free-speec...
Informal reason is that they are often organized by the institutions which funded by other countries, institutions, which aim is definitely not a prohibition of Russia.
May be it is a good idea to avoid judgements about countries/cultures, which you don't understand?