3 ms·PBS had a good documentary on this. https://youtu.be/G0p8bWYY7qM https://youtu.be/G0p8bWYY7qMby factchecker01 7y agoPBS had a good documentary on this. https://youtu.be/G0p8bWYY7qM https://youtu.be/G0p8bWYY7qM