"You never know, one raindrop makes a ripple. If there are lots of raindrops it may cause a flood. Never give up fighting for your beliefs even when you think it won't make a difference!" Thank you, Gez Vasey for this wonderful thought.
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.