Obviously I didn't downvote you, since you were replying to me, and you can't downvote direct replies. But here's my guess as to why others did it:

You didn't come across as getting the point of what I was saying – my point was "if in your own mind, your fundamental definition of group X is that they are anti-Y, people who are (openly and proudly) X and Y simultaneously doesn't make any sense, and when faced with a situation which makes zero sense given pre-existing assumptions, many people will react by just ignoring it". My example of "neo-Nazis who are openly and proudly Jewish" was just an illustrative example; "neo-Nazis who are openly and proudly LGBT" or "neo-Nazis who are openly and proudly Romani" or even "neo-Nazis who are openly and proudly LGBT Romani", are examples of it too.

Your comment also comes across as a generic tangent which isn't trying to add anything original or insightful to the discussion, just repeating facts most people here already know. Yes, we all know the Nazis committed crimes against many different groups – you didn't mention the disabled, the mentally ill, Poles, Serbs (murdered by the Nazis' Ustashe allies in Croatia), Black people, Jehovah's Witnesses, Freemasons, the Czechs of Lidice, among others – but is simply pointing that out adding anything useful to the conversation? We don't need to list every single victim of Nazi crimes every time they become the topic of conversation, and "you forgot about X, they were victims too" is rarely a valuable contribution.

Finally, reaching for "anti-LGBT sentiment" as an explanation for the downvotes, rather than considering other possible explanations – like your apparent failure to get the point, or contributing a generic tangent – isn't helping you either.