Candid Photography

Im really interested in Candid Photography, it ties in perfectly with Street and Urban Photography. I like the mindset of taking photos of people just living their lives, letting them do what they want to do and not interfering in anything. Just capturing the once in a lifetime moment. For example, a runner sweating, a homeless man begging in the street, or even a child playing with a ball in the park.
Capturing someone in their natural environment interests me in that it show the rawest emotion that that person feels at that moment.