Why did Germans support Nazi declaration of war and the invasion of Poland?

The Nazis and Hitler made Poland look like the bad guy. To the Germans anyone who was against them in the war, was bad and out to get them. Hitter wanted to take back what belonged to Germany and the German people. Hitler claimed that their enemies were trying to hurt them and so the people of Germany supported the invasion to take down their enemies. They weren't scared of the Nazis, some maybe but not really, they just wanted to take back what supposedly belonged to them. Germany wanted to take down their enemies and become the most powerful government in the World.