This recent news story is about the “Jewish Avengers” who tried to poison Nazis during World War II: https://www.theguardian.com/world/2016/aug/31/jewish-holocaust-survivor-kill-nazis-poison-arsenic-nuremburg
The following quote is from the news article, cited above:
Seventy years after the most daring attempt of Jewish Holocaust survivors to seek revenge, the leader of the plot has only one simple regret – that to his knowledge he didn’t actually kill any Nazis.
Joseph Harmatz is one of the few remaining Jewish “Avengers” who carried out a mass poisoning of former SS men in an American-run prisoner-of-war camp in 1946 that sickened more than 2,200 Germans but ultimately caused no known deaths. A recently declassified US military report obtained by the Associated Press has only added to the mystery of why the brazen operation did not kill Nazis, because it shows the amount of arsenic used should have been fatal to tens of thousands.
Still, the 91-year-old Harmatz says the message echoed into a rallying cry for the new state of Israel, established in 1948 – that the days when attacks on Jews went unanswered were over.
“We didn’t want to come back [to Palestine] without having done something, and that is why we were keen,” Harmatz said in a hoarse, whispery voice from his apartment in north Tel Aviv. He lost most of his family in the Holocaust.
Despite a visceral desire for vengeance after the second world war, most Holocaust survivors were too weary or devastated to seriously consider it. But a group of some 50, most[ly] young men and women who had already fought in the resistance could not let the crimes go unpunished. While there were some isolated acts of Jews harming individual Nazis after the war, the group, codenamed Nakam, Hebrew for vengeance, sought a more comprehensive form of punishment.
One of my very first blog posts was about the Jewish Avengers: