Ping for your interest.
This demonstrates what "ultra-Orthodox" Jews can do when they're really upset about something. So why aren't they doing this over "gay marriage" and similar issues? Once upon a time they actually did (back when homosexuality was universally condemned).
One reason for this quietism is of course that so-called "ultra-Orthodox" Jews are a very withdrawn group. They live in their own (quite literally Theocratic) world and are most concerned with getting along with whoever happens to be in power. In their world, these social issues don't yet exist (though the left wing of "Modern Orthodoxy" is pushing). The Israeli draft law impacts them directly.
Rabbi Yehuda Levin remarked in one of his videos that the religious Zionists in Israel (who come from Modern Orthodoxy) are more critical of the Israeli government than US "ultra-Orthodox" Jews of the US government.