And if such behaviour was ever found, the gas chamber ate another person. The Nazi government did not take well to dissenters, especially among the armed forces.
Well, the point is at there always were bad people and bad governments. You can't just say that history is not a repeatable experiment, so we are just going to gamble with our private info in hopes that we never get another Stalin or Hitler. I mean, you absolutely can, please feel free to, but I would rather not, thank you very much.
There's more to it than just hope. With sufficient surveillance and recording, you will know you are getting another Stalin or Hitler long before he takes power.
I disagree. Hitler didn't come to power on the promises of gassing millions of people to death - that came later. Actually, if you watch his speeches he had some good points and if you heard someone like him today you could even call him patriotic. And even if you could tell that someone of that attitude is coming to power, what are you going to do if the government already has your data? Protest?