Proximity means nearness in space, time, or relationship. We use it to capture moments in close detail to create up-close emotional images. You can see how strong these images are in creating stories that even media cant capture. These photos are taken in a time where you have to be there for it to work, for example the last image shows a man in the Syrian civil war being shot in the head. If this was taken a second earlier or a second later, it wouldn't have the impact that it has if it is taken at the right moment.
Robert Capa
Robert Capa is a really good proximity photographer. His images are up close which makes them really effective as they use really powerful events in time. He quoted 'if your pictures aren't good enough, you aren't close enough.'