I wrote about this in The Unbearable Lightness of Being: Jan Prochazka, an important figure of the Prague Spring, came under heavy surveillance after the Russian invasion of 1968. At the time, he saw a good deal of another great opposition figure, Professor Vaclav Cerny, with whom he liked to drink and talk. All their conversations were secretly recorded, and I suspect the two friends knew it and didn't give a damn. But one day in 1970 or 1971, with the intent to dicredit Prochazka, the police began to broadcast these conversations as a radio serial. For the police it was an audacious, unprecedented act. And, surprisingly: it nearly succeeded; instantly Prochazka was discredited: because in private, a person says all sorts of things, slurs friends, uses coarse language, acts silly, tells dirty jokes, repeats himself, makes a companion laugh by shocking him with outrageous talk, floats heretical ideas he'd never admit in public, and so forth. Of course, we all act like Prochazka, in private we badmouth our friends and use coarse language; that we act different in private than in public is everyone's most conspicuous experience, it is the very ground of the life of the individual; curiously, this obvious fact remains unconscious, unacknowledged, forever obscured by lyrical dreams of the transparent glass house, it is rarely understood to be the value one must defend beyond all others. Thus only gradually did people realize (though their rage was all the greater) that the real scandal was not Prochazka's daring talk but the rape of his life; they realized (as if by electric shock) that private and public are two essentially different worlds and that respect for that difference is the indispensable condition, the sine qua non, for a man to live free; that the curtain separating these two worlds is not to be tampered with, and that curtain-rippers are criminals.