Like his contemporary, director John Ford, Capra defined and aggrandized the tropes of mythic America where individual courage invariably triumphs over collective evil. Film historian Richard Griffith speaks of Capra's “...reliance on sentimental conversation and the ultimate benevolence of ordinary America to resolve all deep conflicts.”  “Average America” is visualized as "...a still tree lined street, undistinguished frame houses surrounded by modest areas of grass, a few automobiles. For certain purposes it assumed that all real Americans live in towns like this, and so great is the power of myth, even the born city-dweller is likely to believe vaguely that he too lives on this shady street, or comes from it, or is going to.” *******
There is a strong libertarian streak in Capra's films, a distrust of power wherever it occurs and in whomever it is invested. Young people are won over by the fact that his heroes are uninterested in wealth and are characterized by vigorous ... individualism, a zest for experience, and a keen sense of political and social justice. ... Capra's heroes, in short, are ideal types, created in the image of a powerful national myth.