Politi began sketching and painting from a regular spot on Olvera Street in downtown Los Angeles, where he sketched tourists and sold drawings alongside potters, weavers and other artisans-in-residence. Politi's affection for Mexican-Americans and their folkways was genuine; an affinity. Most especially, as a devout Catholic, at home with Italian saints, he responded to Mexican ritual. Children — natural, spontaneous children — he loved without reserve or distinction. Drawing Mexican children, for magazines and books, gave him an American career and a professional identity.