DA and SB both gave good answers. To expand on them a little, imagine the state of mind of the German population after WWI. Imagine what it was like in Germany (especially financially) in the early 30's when inflation was way out of control. Along comes a man (for lack of a better word) and starts giving the population a sense of nationalism and starts fixing the economy. They no longer needed a wheelbarrow full of useless money to buy a loaf of bread. By the time (most of them, anyway) they saw what this little prick was really about, it was too late.