Once again this image is simplistic at first, but once context is given is still portrays a powerful message. The colour tones in this image help to bring the mood down and soften the lighting, rather than lowering the saturation levels post production.
In this image, the blur of people moving around in the crowd makes it look interesting, but it is also focusing on particular people who are standing, walking, moving in what looks like a busy area. A slow shutter speed is used in this image.
Philadelphia 471 by Michael Penn Street Photography - This is a great image because of the contrast between the dangling phone and the blurred people in the background. It seems ironic that the phone is still and not swinging while the rest of the image i
Bokeh photography: Manually focus everything so the lights in the background are out of focus, and the subject (if there is one) is in focus. Also keep a small depth-of-field with a small aperture so the background is easily blurred (motion blur)