What you are asking for is absurd and untenable. You want people to discuss politics isolated and extirpated from every other realm of social life? Differences in demographics, i.e., differences in population, has a direct relevance to and effect on politics.
When someone says that (some) Jews are actively planning and scheming to take over/control the world because they believe it says so in their scripture, then this has political consequences and can be discussed in a political forum. That they are Jews is not the main issue, the main issue is the effects of their ideology on society.
Some Muslims openly declare that they plan to take over the world by whatever means (force or conversions/birth rates). People here make posts about this and you never show up. It makes it look like Jews are favoured over everyone else: if it is something negative about Jews it's not cool, if it is about Muslims it's cool.
Just say that you don't want us to talk about Jews in a way that makes them look bad and we will understand it.