Benjamin Feigenbaum (August 12, 1860 – November 10, 1932) was a Polish-born Jewish socialist, newspaper editor, translator, and satirist.

Benjamin had 4 children, two daughters and two sons, named Kanin, R. Ganetkin, William, and Henry Feigenbaum.

[6] In 1889 at another Yom Kippur Ball, Feigenbaum famously declared "If there is a God and if he is Almighty as the clergy claims he is, I give him just two minutes' time to kill me on the spot, so that he may prove his existence!".

[9] In 1909, Feigenbaum chaired a meeting on whether to strike, held inside the Great Hall of Cooper Union.

Feigenbaum asked the crowd to take an biblically inspired oath "If I turn traitor to the cause I now pledge, may my hand wither from the arm I now raise",[10] which subsequently led to the largest women's strike in US history.

Police surrounded the designated venue, disabled the gas and cited the lack of permit to shut the event down.

The sponsors of the lecture, the Providence branch of the Workmen's Circle obtained the relevant permits and scheduled another venue for Feigenbaum to speak at.

Had Feigenbaum mentioned anything related to "Emma Goldmanism" or "bomb throwing", Goldsmith would have had the halls cleared immediately by the other undercover police in the crowd.

Instead, Feigenbaum orated for two hours and 15 minutes about the compatibility of religion and socialism, in sharp contrast with his past anti-theist recitals.

In the Yiddish article, 'Materialism in Judaism or Religion and Life' (1896), Feigenbaum criticized using the Bible as "propaganda", noting that if Jeremiah did not know Marx, then it was disingenuous to claim that Marxism is part of a prophetic tradition.