Propaganda, a interesting turn

Last week we discussed the difference between Propaganda and advertising. Someone raised an iterating point that has stuck in my head. Advertising is selling a product and propaganda is selling an ideal. I found this picture of a work by Banksy in LA that I think blurs the line between these two things...

Here is the link for the website it came from.

If you follow this link and click on the picture you can see if full size.