Final answer:
According to Garner, the two factors relevant to whether deadly force is constitutionally permissible are the threat of death or serious bodily harm and preventing the escape of a suspect who is believed to have committed a serious crime.
Step-by-step explanation:
According to Garner, there are two factors that are relevant to the question of whether deadly force is constitutionally permissible.
These factors are the need to protect an officer or other persons from a threat of death or serious bodily harm, and the need to prevent the escape of a suspect where probable cause exists that the person has committed a crime involving the infliction or threatened infliction of serious harm.
In the landmark Supreme Court case Tennessee v. Garner, the Court held that under the Fourth Amendment, when a law enforcement officer is pursuing a fleeing suspect, the officer may not use deadly force to prevent escape unless “the officer has probable cause to believe that the suspect poses a significant threat of death or serious physical injury to the officer or others.” This decision has set the standard for evaluating the use of deadly force by police officers.