Robert Doisneau was a French photographer who is considered a pioneer of photojournalism. In 1950, he captured the iconic image Le baiser de l’hôtel de ville (Kiss by the Town Hall), a photograph of a couple kissing in the busy streets of Paris.
From Wikipedia:
Doisneau was known for his modest, playful, and ironic images of amusing juxtapositions, mingling social classes, and eccentrics in contemporary Paris streets and cafes. […] Doisneau’s work gives unusual prominence and dignity to children’s street culture; returning again and again to the theme of children at play in the city, unfettered by parents.
via thestar