I highly recommend reading Zimmer's book. There's a free pdf on libgen. For more details see - https://www.press.uillinois.edu/books/catalog/62ckh5bh9780252039386.html To learn more about Yiddish anarchism watch the documentary Free Voice of Labour: The Jewish Anarchists - https://youtu.be/D7tqR1Ta7rQ To hear more from Zimmer watch this interview I uploaded - https://youtu.be/cOG3X1jAxfo