In Hong Kong there have been, for some time now, an ongoing series of protests by investors who have lost money in the recent financial, ummmm, downturn? unrest? correction? Many of these people want the banks to return the money that they invested. Or in other words, make good the loss. Claims, counter claims and stories about misrepresentation of risk fly.
Part of the protest action is to make lots of noise outside the banks. This is done in a range of ways, including many people banging drums and crashing cymbals, as in this case. I liked how this person had worked out a simple way to do this with one cymbal.