Adolf Hitler was much bothered about public opinion regarding his regime in Germany. So to find that out he often used to disguise himself and roam about in the city.

Once he entered a theatre and took his seat among the commoners of the city.

As the news reel started, he appeared on the screen, everybody stood up and shouted "Hail Hitler". He was very pleased at this gesture by his countrymen and continued to sit till a person on his right blurted out, "Get up you fool, we all feel like that, but we take no chances".
 

A Snippet from my 1970 Diary