Many liberals feel that civilian gun ownership is unnecessary because adequate protection against the criminal element is afforded by the police. I advise them to think through the following considerations:
Misinformed people oppose self-defense objections to gun ban laws, urging victims to instead rely on police. This misunderstands what policing is and does. Accordingly, when criminals rob or injure them, misinformed victims try to sue the police for not protecting them. Whereupon the police send forth lawyers invoking the universal US rule that the police duty is to discourage crime only indirectly by patrolling the streets and by apprehending criminals after their crimes.
While police should stop crimes they observe, criminals take care to strike when police are not present. In fact, police almost never (less than 3 percent of cases) arrive in time to help victims. For that reason, the statutory or common law of every state exonerates police from suit for non-protection, e.g. California Government Code §§ 821, 845 and 846: “[A police department and its officers are] not liable for an injury caused by ... failure to enforce an enactment [nor for] failure to provide police protection service or ... provide sufficient police protection service [nor for] the failure to make an arrest or [the] failure to retain an arrested person in custody.”
Misinformed persons also urge victims to depend on restraining orders instead of self-defense. But restraining orders are just pieces of paper. A five-year study [PDF] in Massachusetts found that almost 25 percent of domestic murderers were under a restraining order when they killed.