If you weren't around in 1964, you probably never saw this. And even if you were, you may not have.

It only aired once - on Sept. 7, 1964 - on NBC's Monday Night At The Movies. (Back when showing a movie on broadcast TV was a big deal.) It was during the height of the Cold War between The Soviet Union and the U.S., when there was real fear the world could be destroyed with the push of a button.

This thing made such a splash and created so much controversy, it was never shown again. But those who saw it will never forget it. 

It has since become both the blueprint for future "scare" ads and also a lesson against them. Still, it worked. Lyndon Johnson beat Barry Goldwater to become President of the U.S. and many credit this ad with helping to make that happen. 

It's known as "Daisy" and it was a doozy, so famous, it's now an exhibit in the Library of Congress. After this, political ads would never be the same.