Isn't this is an issue only prayer resolves? That is, every Jew is more tightly linked to G-d than, perhaps, to even his own family, much less the rest of us. Isn't this type of mass slandering if that is what it is, being call of the leaders applauded by their congregations, best and perhaps only effected by petition for redress to G-d, Himself?
Ideally? Yes.
Realistically, this group may forget their faith and the covenant. These are people who, while they may think themselves good men (and probably are, in many, even most, ways) are not righteous men, nor good Jews.