Obviously the current one that's on many people's minds is Trump and his "Make America Great Again," with the "great" being sort of this vague 1950s ideal. Some prominent historical examples are Mussolini wanting to return to the glory of the Roman Empire, and Hitler's "Third Reich" (with the first two Reichs being the Holy Roman Empire and German Empire.)
Do the conservatives in your country use this kind of rhetoric, and if so, when do they want to "return" to?