This website gives you a ton of information on the Holocaust. In the themes section, Making a Leader talks about how propaganda was used by the Nazi Party.
It was used to create a rise in political promience by making Hitler seem like a person who would be a good leader for Germany. Propaganda was used to show what was happening in Germany and with Hitler. I believe propaganda has been used a lot and will keep being used. It started with churches and such but had gotten a lot bigger. I think propaganda can have a big effect on some people today.