This picture shows shutter speed because it freezes what's going on not fully but it does. For example in the picture the couple is there but in the back ground is a bus moving and it's frozen but at the same time blur so the shutter speed isn't too low
Motion blur photography is used to depict the sense of speed. This exercise is done by using slow shutter speeds of a camera. In order to master the art of motion blur photography, one need to master the camera and should be able to play with speed.