>The Western world, and many others, mobilized to stop Nazi Germany.

That was more of an effort to avoid Germany getting more powerful (and affecting them) than a humanitarian mission. Besides, half of the "western world" took side with the Nazis, including a full blown pro-Nazi government in occupied France (with tons of sympathizers pre- and during the occupation), Italy (of course), Austria, Bulgaria, Estonia, Norway, Ukraine, and so on.

>Lynching was an illegal act.

And yet few ever got into prison for it when it was practiced.