Beneath the absurd comedy of [Jailbird] with its chance encounters and unlikely coincidences exists a dark undertone of satiric comment on the loneliness, corruption and impersonality of American society. RAMJAC and Watergate are central symbols of our existing economic and political evils. Vonnegut's heroes are the little people like Mary Kathleen and such political martyrs as Sacco and Vanzetti (reminding one of Dos Passos's U.S.A., a probable influence on Vonnegut). As Mary Kathleen says about our lonely crowds: "They all look so mean to me…. I don't see anybody being kind to anybody anymore." And Starbuck, comparing his own moral deficiencies with individual acts of kindness he has received, says: "I've never been a serious man…. I never risked my life or even my comfort in the service of mankind." Vonnegut's main theme seems to be our need to rehumanize the world with love, concern and responsibility for our fellowman.