a bmx rider, wall rides.
A rider uses the wall.
A rider takes his bike down the trail.
the skateboarder is doing a trick
A man in wearing a white hat holding a scythe and a cutting of wheat.
The man and the boy are standing still on two legs, watching the environment around them.
A group of people throw bricks at each other.
A small child throws a plastic ball.
The original 1970 law didn't mention time limits on rate cases.