Here’s how they did it in 1956. Now THIS is scary!
http://www.youtube.com/watch?v=uGLhpVrxECg&feature=related
Yep, I’ve got that whole movie somewhere, very scary stuff, from the “duck and cover” era!
But, they got the message through loud and clear. Unlike today.
One of the comments: “If you read between the lines, dude is saying ‘Hey everyone. Civilization has been cancelled. Eat your neighbors. Good luck.’”