What is the difference between a Jew and a bullet? A bullet makes it out of the chamber
Do you have some sort of problem with jews?
Do I really? I don't think Jews ever died in the gas chambers in reality, and no one even put them in the ovens. So it's a safe joke. They are liars and I can make fun of them.
Even if that's what you believe, what if you're totally wrong? You would be trivializing the suffering of millions in that case. I think it's the better choice to keep these opinions to yourself or else you might find lots of trouble with victims.