Unprintable words

Two-thirds of the Russians admit using unprintable words at times. They say that their friends do it too. Most of them even can’t speak not using these words. However, the above people strongly object to foul language if it’s used in public by politicians, actors, athletes or journalists. I think that swear words can be forgiven if they’re used as a link between the phrases. But they can’t be forgiven if used for expressing somebody’s bad emotions and anger in public. Am I right?