We've Seen Nazis Rally in the US Before

What does it look like when twenty thousand Nazis gather in the US? Check this out from The Atlantic:

In 1939, the German American Bund
organized a rally of 20,000 Nazi supporters at Madison Square Garden in
New York City. When Academy Award-nominated documentarian Marshall Curry stumbled upon footage of the event in historical archives, he was flabbergasted. Together with Field of Vision, he decided to present the footage as a cautionary tale to Americans. The short film, A Night at the Garden, premieres on The Atlantic today.

https://www.theatlantic.com/video/index/542499/marshall-curry-nazi-rally-madison-square-garden-1939/?utm_source=eb