Final answer:
Most people justify their inaction during crimes due to 'diffusion of responsibility,' where the presence of others diminishes individual responsibility to intervene. Debates on morality and justice systems, such as the efficacy of capital punishment, illustrate a complex landscape of personal and societal choices in addressing crime. Psychological and social theories provide insights into the moral reasoning and behavior that contribute to these challenging situations.
Step-by-step explanation:
When it comes to people not intervening in a murder, there are several factors that may justify their lack of intervention. One reason is the diffusion of responsibility, which occurs when there are multiple witnesses to a crime and each person assumes that someone else will take action. Additionally, people may be less likely to help if they don't know the victim personally. Another factor could be a belief that intervening could put their own safety at risk. It's important to note that these justifications vary among individuals and situations.