The time to stop the German socialists was when they were burning and looting stores and murdering Jews in the street........which is why the socialists took away their guns.....
There are many misconceptions on how the Jews reacted to the Nazis and how the Nazis reacted to the Jews, both before and during WW2.
None of it having anything to do with the Nazis disarming Jews!
In fact, Jewish people took up arms and fought the Germans as often as other ethnic or religious groups or factions.
Bearing in mind that the catholic church's alienation toward Nazism made it less likely that catholics in some countries fought the Nazis in as large numbers.
If an American or Canadian wants to be a student of WW2 history then he/she will have to demonstrate they are interested in the truth.
We know that truthful history in any war doesn't come exclusively from the victor.