Hitherto my acquaintance with the Social Democratic Party was only that of a mere spectator at some of their mass meetings. I had not the slightest idea of the social-democratic teaching or the mentality of its partisans. All of a sudden I was brought face to face with the products of their teaching and what they called their WELTANSCHAUUNG. In this way a few months sufficed for me to learn something which under other circumstances might have necessitated decades of study--namely, that under the cloak of social virtue and love of one's neighbour a veritable pestilence was spreading abroad and that if this pestilence be not stamped out of the world without delay it may eventually succeed in exterminating the human race.