Keep America Beautiful
In the Crying Indian ad, an actor dressed as a Native American paddles a canoe through a stream.  At first, the stream is clean and pretty but it becomes dirtier and full of garbage.  He gets out of the stream and walks to a highway, where people throw garbage out of their cars.  Then he slowly cries one tear.  A voice says, "Some people have a deep, abiding respect for the natural beauty that was once this country. And some people don't. ... People start pollution. People can stop it." The ad was on television starting in 1971.  It was about littering.  The ad won many awards, for example two Clio Awards.  Television stations played it so much that their copies of the film wore out and they had to get new ones.