See a working video here (click).
This Czechoslovak communist propaganda video from the 1950s is a great example showing that the anti-American environmentally loaded propaganda is nothing new. The videoclip above is almost identical to the contemporary propagandistic movies and news about Americans causing global warming.
Because it's in Czech, let me explain some background (even though you will understand some parts of the video anyway).
The Colorado potato beetle (Czech: Mandelinka bramborová), a bug that eats potato crops, started to intensely propagate throughout Europe in the 1940s because of much improved potato transportation. The Nazi propaganda used it to argue that the U.S. Air Forces were distributing the bug by their aircraft. Amusingly enough, the communists adopted the very same thesis, regardless of the uniform nature of the expansion of the bug across Europe.
This is another article comparing communist and environmentalist propaganda.Now you should look at the video and read the translation right beneath it.
Now, what's wrong with the video? Why is it propaganda? Most obviously, the content of this video is not true. The bug was spreading due to natural reasons and as a by-product of technological progress, not due to the American imperialists. But let's imagine that the basic hypothesis could have been true and we were just uncertain. Note that virtually all of my criticism of the videoclip applies to the global warming propaganda, too.
Well, even if we didn't know that it was really untrue, the movie deliberately oversimplifies the story. It is inconvenient for them to say that the bug spreads because of many known reasons and some unknown reasons. They choose one convenient, anti-American explanation only and they have presented it repeatedly. Note that the basic idea - that it was the evil Americans who sent the bug - is repeated many times throughout the videoclip. They rely on Goebbels's thesis that a lie repeated many times becomes the truth.
Also, the Americans are deliberately connected with an emotional adjective - imperialist - that should gain a very negative connotation as a result of all this propaganda even though the economic system of "imperialism" would have clearly nothing to do with the bug even if it were deliberately propagated by the U.S. agents. Also, the bug is constantly connected with the adjective "American" in order to associate America with bad things. They seem to forget that not only the bug but also potatoes themselves came from the Americas.
The propaganda movie uses children and emotional scenes evoking the idea that the children would have no future because of the evil Americans: the purpose of this strategy is to change a possibly rational approach of people to these matters into an emotional one. This aspect of the ancient Stalinist videoclip is reproduced by An Inconvenient Truth and other contemporary propaganda pieces without any modification whatsoever.
Another subtlety is that these videoclips deliberately encourage people to believe in various convenient scientific myths, for example that clouds can carry a beetle (or its eggs) for hundreds of kilometers. In the same way, An Inconvenient Truth deliberately encourages people to think e.g. that the CO2-temperature relationship proves the influence of CO2 on temperature even though it is known very well - and arguably even to the producers of the movie - that the direction of the main causal link certainly goes in the opposite direction.
The videoclip presents the situation in a black-and-white fashion. Finally, it is emphasized by the movie that the whole nation is unified and it has switched from words to action. In reality, it is, of course, a complete nonsense because only a small portion of the nation would participate in the extermination of the bug. Also, an off-topic comment about the execution of Ms Horáková and Mr Pecl is incorporated in order to intimidate possible critics. The very same insights apply to a fight against global warming. Quite obviously, a vast majority of the world's population doesn't participate and cannot participate in overly ambitious projects to radically change the role of carbon in our lives. And many people disagree with these projects as long as they have the basic freedom to do so. But the movies associate the skeptics and critics with various unpopular and losing groups from the past.
The technical details of the anti-American propaganda keep on changing but their dirty tricks and dishonest nature survive without any change.
And that's the memo.