Why do you think Rudy's attitude toward thievery changed?

Rudy grows angrier over his father's conscription and the fact that chance has brought Liesel's father and not his home. He sees Hitler and the Army as having stolen the men, and as a result he plans a violent burglary against the wealthier members of his town. Yet Rudy is unable to commit anything more than petty theft. This is perhaps a reflection of Rudy's ultimate powerlessness in the face of the German war machine; he cannot fight them with violence.