Was propaganda so effective in World War 2?

without a doubt, it caused public out cry when the Germans were accused of killing babies and women in Belgium, they shot a nurse called Edith Cavell, there is a statue to her now in London, there were no tv's or radio in those days so you only new what was in the newspapers,

its a good way to get men to join and fight if you tell them the enemy is horrible.

Also the Luisitania was an American passenger ship carrying civilians, the Germans sunk it ! imagine the uproar, sort of an old 9 /11.

My referance here to 9/11 is not ment to offend in any way, mearly to point out the relevance of Propaganda.