Propoganda!

War propaganda is one of the most powerful instruments that a military has for gaining popular support, sans good reasons. Lets take this propaganda poster from North Korea, for example:

"Though the dog barks, the procession moves on!"

The poster is created to drive into the mind of the north Koreans that North Korea will plow ahead while the US, a ragged old dog, will be left behind. The whole pint that the government who sponsored this piece is simple: We will progress faster then the US to the point that they are nothing. This is intended for north Korean eyes only, like most propaganda to their respective countries, as it's purpose it to make north Koreans think they will soon be above the US. This shows that North Korea hates the US for some reason.

"Death to US imperialists, our sworn enemy!"

From North Korea yet again. this time they are saying we are their sworn enemy. It is clear to see, from the "US imperialists" part of the propaganda, that they dislike us due to the Korean war that we supported. Thus, here they are showing an US soldier, wrapped in a flag, about to get murdered. The red stands for North Korea, thus North Korea is killing the US.

"Do not forget the US imperialist wolves!"

Here is another North Korean piece again showing the US as imperialists, but with an added extra. This time the propaganda is also showing us as horrific bastards who are dropping a baby into what we can only assume to be a well (It could also be a planter box, but I'd hazard a guess that the North Korean government does not want to spread the the US drops babies a foot into planter boxes.)  Thus the North Koreans are showing us, combining all three posters, as horrific imperialists who would kill babies, and are also behind them. This series (For more click here) is clearly commissioned by the North Korean government who wish to make its population believe, in any way possible, that is US is both horrible and nothing.