Fifty years ago, on Sept. 7, 1964, a political ad called “Daisy” aired on behalf of President Lyndon Johnson. The commercial opened with a little girl in a meadow, then a horrific nuclear blast filled the screen. We’ve been feeling the fallout ever since. It was only a minute long. The paid ad ran on national television only once, and only on one network, NBC. But that’s all it took.
