I won't give in!

A group of people in protective gear, including helmets and vests, are inside and around a building with large glass windows, as a cloud of white smoke or powder erupts from the interior. The individuals move quickly, some running out of the building while others inside react to the sudden burst, with one person falling to the ground as the cloud expands. The scene is set at night, illuminated by a strong red light, and the building appears to be a commercial establishment with shelves visible through the windows.