the day the earth stood still

An alien and a robot land on Earth after World War II and tell mankind to be peaceful or face destruction.

Science Fiction ꞏ Thriller ꞏ spacecraft ꞏ flying saucer ꞏ peace ꞏ remote control ꞏ ufo ꞏ social commentary ꞏ giant robot ꞏ black and white ꞏ military ꞏ physics professor ꞏ humanity ꞏ alien technology