Is propaganda most commonly found in communism? If so, please cite some evidence. And if not, where?

Heck no! Almost every political race in the US you will find propaganda! And it is guatanteed to be there in every single solitary presidential race. It was nearly everything you heard about both candidates and it was shameful. Some races its less than others but this one was ugly.

"prop·a·gan·da

noun

derogatory information, especially of a biased or misleading nature, used to promote or publicize a particular political cause or point of view."