Greenpeace recognized World Water Day (March 22) with its latest stunt, tied to the ongoing Detox program targeting fashion brands. In the clip above, people around the world wipe down posters on city streets to reveal a “secret” about the damage that the fashion industry is doing to the world’s rivers.

In some ways, we wonder if the video isn’t more effective because the organization was able to splice other images like the dirty water in the buckets and the crisp rushing river. It hits home in a way that a passerby, curiosity piqued by the secret, wouldn’t experience.