The Bund rapidly declined in the aftermath of the rally, not owed to the outbreak of World War II, but with Kuhn being imprisoned for embezzlement by the end of the year and his successors being prosecuted for espionage.

Chief Inspector Louis F. Costuma illustrated this commitment to safety, telling the press, "We had enough police here to stop a revolution" in an interview in preparation for the rally.

[5] Chief Inspector Costuma's police force acting security was exposed to an odd form of protest as well, characterized by The New York Times as:At 8 p.m., a loudspeaker in a second-floor window of a rooming house at Forty-ninth Street and Eighth Avenue began blaring a denunciation of Nazis and urging, "Be American, Stay at home".

[5]Joseph Goldstein, a former New York magistrate, exited a taxi cab in front of the rally holding a summons for the arrest of Fritz Julius Kuhn concerning a criminal libel suit filed earlier.

Goldstein, like all other opposing efforts to gain admittance to the Garden, was stopped by police, this time by Inspector Costuma himself, denying the former magistrate entry based on the failure to present a ticket.

[7] The rally occurred when the German American Bund's membership was dropping; Fritz Julius Kuhn hoped that a provocative high-profile event would reverse the group's declining fortunes.

Midwestern Gau leader George Froboese was next to speak, pushing themes of 'Jewish world domination', blaming the 'oriental cunning of the Jew Karl Marx-Mordecais for the class warfare felt across the country.

'[9] West Coast leader Hermann Schwinn chose to denounce the Jewish control of Hollywood and news industries, claiming "Everything inimical to those Nations which have freed themselves of alien domination is 'News' to be played up and twisted to fan the flames of hate in the hearts of Americans, whereas the Menace of Anti-National, God-Hating Jewish-Bolshevism, is deliberately minimized.

[9] Everything came to an immediate halt in the middle of Kuhn's final speech because a man who was dressed in blue broke through the lines of Ordnungsdienst (Security Service) men, ran onto the stage, and charged at the speaker.

Quickly swarmed by the Ordnungsdienst, the Bund's paramilitary, he was subdued in an effective routine of punches and stomps which exemplified an 'uncanny replication of Nazi thuggery' [as] a pack of uniformed men blast[ed] away with fists and boots on a lone Jewish victim.

Attempting to control the riled-up crowd, Kuhn delivered his rousing finish, advocating the establishment of an America which would be ruled by White Gentiles, free from a Jewish Hollywood and news.

After its financial records were seized in a raid on the group's Yorkville, Manhattan headquarters on the Upper Eastside, authorities discovered that $14,000 (worth about $273,000 in 2021) which was raised by the Bund during the rally was unaccounted for – Kuhn had spent it on his mistress and various personal expenses.

[3] Kuhn's successor as the Bund's leader was Gerhard Wilhelm Kunze, a spy for German military intelligence who fled south from the United States in November 1941.

[12] The Bund's final national leader was George Froboese, who was in charge of the organization when Germany declared war on the United States, several days after the Attack on Pearl Harbor, December 11, 1941.