An interesting video about Vivian Maier, a street photographer and nanny and how her work fortuitously could become as famous as the current icons of today.
Street photography is a type of documentary photograhy that features subjects in candid situations within public places such as streets, parks,beaches, malls, political conventions and other settings.
Street photography uses the techniques of straight photography in that it shows a pure vision of something, like holding up a mirror to society. Street photography often tends to be ironic and can be distanced from its subject matter, and often concentrates on a single human moment, caught at a decisive or poignant moment. On the other hand, much street photography takes the opposite approach and provides a very literal and extremely personal rendering of the subject matter, giving the audience a more visceral experience of walks of life they might only be passingly familiar with. In the 20th century, street photographers have provided an exemplary and detailed record of street culture in Europe and North America, and elsewhere to a somewhat lesser extent.
Many classic works of street photography were created in the period between roughly 1890 and 1975 and coincided with the introduction of portable cameras, especially small 35mm, rangefinder cameras, most famously the Leica, as used by Henri Cartier-Bresson, among others.