are the police departments really using protecting public safety as the justification for taking advantage of surplus military weapons and vehicles? 
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the supreme court has ruled that police departments and their officers have no duty to protect an individual from harm from another individual. the rulings were sought by police departments seeking relief from liability for not protecting people in their jurisdictions.
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if the police departments fear armed criminal activity to the point where they seek military grade weapons and vehicles to protect themselves, why do police departments, such as those in hawaii, deny citizens their constitutional rights to carry firearms to protect themselves and their families from the same armed criminal activity?
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police jurisdictions that deny citizens the constitutional right to carry firearms should prove their point by patrolling without firearms.