Photographs of violence produce paradoxical responses. On the one hand, the acknowledgement of the crime and confrontation with its gruesome effects is an admittance of the need for social improvement; on the other, repeated confrontation with such images may simply numb us to their shocking effects. Does photography allow us to bear witness to a victim's suffering, or does it anaesthetize us to the horror?
Part of the Exposed exhibition at the Tate Modern - it's a great collection they're showing. If you get chance, go to check it out.