If you love the raw, unscripted energy of street photography you should pay a visit to the William Klein exhibition at the Tate Modern, featuring New York photographer William Klein.
Klein has been taking pictures on the streets of New York for more than 50 years, capturing the fluctuations in the city’s fortunes and the changing faces of its inhabitants. It is striking and inspiring. The exhibition runs till 20 January and I definitely recommend it!
If you want to read more about him there is a nice profile in the Telegraph.