Some Kind of a Nut

Some Kind of a Nut is a 1969 comedy film starring Dick Van Dyke, Angie Dickinson and Rosemary Forsyth. It was written and directed by Garson Kanin.

While on a picnic in the park, Fred is stung on the chin by a bee. Because it hurts him to shave, Fred lets a full beard grow. He returns to work from vacation and is surprised when his boss orders him to shave. Pamela doesnt care for the beard, either, but Fred is tired of always conforming to everyone elses desires and demands. He refuses and is fired.Colleagues come to Freds defense. The male ones grow beards in support. Coworkers go on strike and carry picket signs outside the bank, soon joined by hippies and jazz musicians with beards. Fred becomes an overnight media sensation. ........

Source: Wikipedia