Here is a quick image to get started... I'l post more snippets later.

Roaming the streets on N30. It has been so long I can't remember the name of the intersections anymore.

One of the environmental groups (Greenpeace, perhaps? Or the Humane Society?) brought a giant inflatable killer whale. Huge, perhaps 30' long.

The police were charging up a hill to clear and area and the environmentalists laid the whale in the street and pushed/rolled it down the down the hill into the police charge, completely breaking it up. The police just didn't know what to do when facing a giant, inflatable killer whale...