The greatest lie being told is that we don't exist, that we're just extremists and no sane person would ever care of our ideals.
By convincing people that they aren't numerous, they're less willing. Once people realize they aren't alone though, they rise to the occasion. They're trying to make us think that we aren't numerous, that we have no influence and that we can't do anything, that everything is out of our control and out of our power.