A Jewish shopper at a Costco store in the San Francisco Bay Area has uploaded footage of an extremely anti-Semitic rant tirade he was subjected to by a woman giving a smoothie demonstration at the store.

According to the Coordination Forum for Countering Antisemitism, he said the woman began her rant by interrupting him during a conversation with another Jewish man.

"I struck up a conversation with a Jewish guy in Costco in front of the Vitamox Blender Demonstration, when an employee interrupted to tell us that Jews need to go back where they came from. I asked her how that would be possible after what happened in WWII. She responded that Hitler never did anything wrong to the Jews and that they brought it on themselves," he said.

In the video - originally posted on the Live Leak video sharing site - the woman can indeed be heard claiming that the Jews were not persecuted by the Nazis, while simultaneously admitting something bad may have happened to them but that they "brought it on themselves."

"They had a chance to go ahead and get $500 for their freedom," she bizarrely asserted.

Prior to that, she could be heard saying that Jews should leave Israel and "go back to Europe", because it is "Palestinian land."

The clip ends with the victim owing to report her to her managers. "You're gonna be fired today."