As recounted in "Barney Ross: The Life of a Jewish Fighter", by Ross biographer Douglas Century, in the wake of the tragedy, Dov became vindictive towards everything and turned his back on the orthodox religion of his father. He began running around with local toughs (including another wayward Jewish ghetto kid, the future Jack Ruby), developing into a street brawler, thief and money runner; he was even employed by Al Capone. Dov's goal was to earn enough money to buy a home so that he could reunite his family. He saw boxing as that vehicle and began training with his friend Ruby.