The next big step he took was when he was mistaken for a police spy standing outside the offices of Emma Goldman's revolutionary magazine. He is taken inside and ends up at a congress in the Cooper Union in support of the Mexican Revolution. This time instead of being at such a meeting because Evelyn was there, it seems that he attends because he is drawn to Goldman and her ideas. He feels ashamed that he, from a relatively wealthy family, has nothing with which to support the cause while the working poor around him all find some change to give. I think that this is another turning point, the point where he wants to contribute to a revolutionary cause. We clearly see how strong Younger Brother begins to feel about his ideals when he responds to Father's comment that Coalhouse would have been better off just driving away when he could and forgetting the matter.
Younger Brother bristled. You speak like a man who has never been tested in his principles, he said. Father was so outraged by this remark that he could find no words.
This firm belief in justice is the basis of all revolution, and Younger Brother obviously has this belief. Of course, the real leap he makes towards becoming an outlaw like Coalhouse is when he seeks out the man himself. He shows how he truly wants to rebel by the amount of effort he puts into joining him. An easy way out without feeling like a coward would be to put little efforts in to attempts to communicate such that he never actually got Coalhouse's attention. However, Younger Brother is no coward when it comes to this revolution, and successfully joins the small group of black fighters. This officially commences his career, though the seeds had been planted long before.
