Did they ever punish the Jews who joined the police force that helped the Nazis keep Jews in line? I heard they were hated by their fellow Jews but I never heard of them being prosecuted after the war.
Yes, “they” did.
“During the Holocaust memorial ceremony in Brighton Beach last June, each of the neighborhood’s synagogues sent forth one of its faithful to light a candle. A stooped old man named Jacob Tannenbaum represented Temple Beth El, and those who attended the service recall that as he lit the wick he began to cry. And so did the friends who knew that Mr. Tannenbaum himself was a survivor, the sole survivor from a family of 12.
Now the same Mr. Tannenbaum is accused by Federal authorities of wartime atrocities; of viciously beating his fellow prisoners while serving as a kapo, or overseer, in a forced-labor camp. The Justice Department has moved to rescind the 75-year-old Mr. Tannenbaum’s citizenship in the first step toward potential deportation. Only three times before has the United States charged a Jew with collaborating with the Nazis, and only once was the man ordered out of the country.”