Events such as the Warsaw Ghetto Uprising showed some Jews really were willing to defend themselves with arms. The Jews were not cowards and the characterization as people who won't "mount resistance" is woefully wrong. It may be true they may have not been able to successfully overthrow the Nazis, but it is possible some of the oppressed may have survived another 10 or 15 minutes (in the Warsaw Ghetto, days) after initiating self defense and even if them being armed would have made things worse for them, that should have been their choice to make and not yours.

There is some sort of fundamental honor as well to allow to allow someone the tools to at least maybe shoot a Nazi on their way out, as one last act of resistance before certain death. Arms are a right even when desperate circumstance make it almost only symbolic.

Edit: also some may enjoy this amusing bumper sticker, created by a Jewish organization in America who themselves criticize Nazi gun control (https://store.jpfo.org/40-large_default/-all-in-favor-of-gun...).