I grew up on the south shore of Long Island (they capitalize it there: South Shore), in a blue-collar Suffolk County town: Lindenhurst (formerly Breslau. changed in 1891 by the town elders). The German-American Bund marched through Lindenhurst in 1937. There's no discussion of how they were received but I'd guess it wasn't with derision and anger.
The Bund was big business, spending good American dollars with local merchants and vendors. In Yaphank, where they set up a rural retreat - Camp Siegfried (after the Aryan warrior of myth ) - they'd meet every Sunday: thousands of German-Americans from as far as Ohio, riding the train out from Penn Station to enjoy the fresh air, engage in outdoor activities, eat picnic lunches and consort free of mongrel races.
New Jersey had its own retreat: Camp Norland, in Sussex County. Howsabout your town? Nazis? Klan? Who are YOUR hometown racists?