He is also holding a gun in one hand and a wad of money in the other.[Harper has robbed a bank of ten housand dollars to feed his family during hard times, but in his escape killed two people and was wounded.[Note: Kubrick""s work with actor Kirk Douglas in this film led to his choice as a replacement director for Anthony Mann forSpartacus (1960),following a falling out between Douglas and Mann.As a therapeutic solution to his life, Bickle even offers to work Jewish holidays and ride into the city""s sleaziest areas - he explains that he might as well get paid for wandering haphazardly:Bickle: I can""t sleep nights.He sent him sailing into the windshield of another bus, and then tumbled him around inside the overturned vehicle.