There is something Hertzl said that is very true, "A realist never accomplishes anything" it was true then its true today. What we need and what Hertzl and Rabbi Kahane zt'l and all great Jewish leaders were, were people who were idealists who believed great things were possible that the so called "moderates" laughed at. But at the same time they understood the methods needed to accomplish their goals, it happened to be that many of the foot soldiers and mid range leadership often fell and fall into the crazy category.
That is because "realists" don't believe in God, when it comes right down to it.