Crying Indian public service announcement
In the Crying Indian ad, an actor called Iron Eyes Cody, 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.  The tear is made of a drop of glycerin on the actor's face.  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.  The group Keep America Beautiful paid for and made the ad.  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.