Perhaps because they live and impact the society you live in, from partaking in government, to voting, amongst other things which may potentially have an impact on your life (such as preventing you from having a sane discussion). I shouldn't even have to mention the Nazis of the 1930s as an extreme example to drive the point home on how anti-semite nut jobs could result in bad things.

This is in context to criticizing the israeli government. Don’t act obtuse.

You’re literally proving my point.

There's nothing obtuse here. You'd had asked:

>why should I worry about nut jobs who hate jews?

And I gave you several plausible reasons which may be a cause for concern depending on what it is you will.

I'm not talking about you. You might think there are worse problems in your life or society than conspiracy theories about Jews, hatred against Jews, attacks on Jews or countries trying to end Israel.

I'd just rather not have discussions with people who feel that way. If I encounter anti-semitism I stand up to it, but I'd rather not attract them like moths to a flame...