The wizard nodded. "I have seen it once before, but I was unable to save that wizard. The government killed him before my eyes. Your government would kill you too, though so far the fools have not accepted what it is that they are dealing with. You were very wise to attack only during bombing raids. It has confused them." He held out his hand. "My name is Gellert Grindelwald. Come with me, away from here. I will see to it that you are trained in magic, as is your birthright, and in return you will help me. Together we can rule these Muggles."