“external enemies attacking” is the most basic example of antisemitism. Whether it is Hamas doing a suicide attack or the Klu Klux Klan breaking a shuls windows.
And Hamas kills more Jews in Israel than antisemites outside of Israel kills Jews.
If you want to discuss government sponsored attacks on Jews, that’s never happened in America and there’s no reason to think it is more likely today or tomorrow than it was yesterday or ten or twenty years ago. In Israel, there is reason to suspect the government coming against Torah Jews.