SQUARE_ROOT:
Let’s rewrite that to reflect Torah and reality, rather than Zionism.
In our times, there is a large organized movement (Zionism, of course) to endanger and commit shmad against all Jews, starting with the Jews in Eretz Yisrael, but not ending with them.
Anyone who publicly supports the Zionists is becoming a de facto ally of that large organized movement to endanger and commit shmad against all Jews, starting with the Jews in Eretz Yisrael, but not ending with them.
Therefore, anyone who publicly joins the Zionists becomes a rodaif and a mosair, because he joins himself to those people who work to endanger and commit shmad against all Jews.