Cocktail Molotov (movie, 1980)

"Cocktail Molotov" is the story of the adventures of this threesome, who reach Venice only to learn of the outbreak of the May 1968 disturbances at home. Once again, Anne, Frederic and Bruno realize that the important things of their time are happening somewhere where they are not. Swindled out of their car and virtually broke, they hitchhike back to Paris, hoping to arrive in time for some of the excitement.