Avi, there are definitely not-Frum people reading this (as well as non-Jews, anti-semites, anti-Religious, and anti-Chareidi people who will get the impression that these people represent the Chareidi world since they are (possibly incorrectly) referred to as Chareidim). Therefore, it is L”H and a Chilul Hashem (if posters write about them negatively)
The fact that one of the protesters may happen to be reading this as well does not render it okay.