In the 1930s, while Adolf Hitler was inciting the German people toward bellicosity and Nazis were establishing horrific concentration camps around Germany, Nazi summer camps for youngsters — like the one near Windham, N.Y. featured in the clip — popped up around this country. The pro-Hitler retreats were sponsored by German loyalists, such as the German-American Bund led by Fritz Kuhn.
The Bund, "which came to include more than 70 local chapters," according to a 2014 National Archives blogpost,
"was founded in 1936 to promote Germany and the Nazi party in America.
The most well-known of the organization's activities was the 1939
pro-Nazi rally held at Madison Square Garden that drew a reported 20,000
attendees." NPR story here.