I am somewhat confused as to your comment about why the holocaust was brought up. Surely Kristallnacht is generally considered part of the holocaust? The most documented/commented on parts of the nazi gun confiscation are directly in the sub-context of kristallnacht. the content dispute in the article is about did the nazi's use gun control against the jews (and to what degree did that contribute to the holocaust). Bringing up the holocaust is entirely appropriate in this context is it not?