There were
always pogroms against Jews in many European countries and anti-Semitism was
common, but it's state power that allowed Hitler and his Nazis regime to murder
people on a vast industrial scale.
The persecution of Jews throughout Europe and the concentration camps, were not a casus belli for why Britain declared war on Germany. People knew that Jewish people were trying to flee Nazi Germany but most weren't aware of the extermination camps, until the end of the war. British intelligence would probably have known about the camps and probably their locations, but I don't think bombing the camps or the rail links leading to the concentration camps, was a priority for the British government. The Nazis also exterminated gypsies and other ethnic groups.
A lot of people in politics today, have a guilt complex about what happened to the Jewish people during WWII and that's understandable, but that should not excuse what the Israeli's have done in Gaza or the West Bank. Around 70,000 people have been killed in Gaza by carpet bombing and many of the dead are innocent women and children.
I remember the Jewish Labour MP, Gerald Kauffman saying "My 80-year-old grandmother didn't die after being shot by a Nazi so an Israeli soldier could shoot an 80-year-old Palestinian woman." Kaufmann is one of many Jewish people who condemned the actions of the Israeli government in Gaza and the West Bank.
The Israeli Prime Minister, Benjamin Netanyahu, is wanted for war crimes and crimes against humanity by the International Criminal Court (ICC). That was what the Nazis were charged with at Nuremberg.

























