You certainly can when someone is threatening you.
Threatening you how?
Unless Arbery was in fear of severe imminent bodily injury or death, he had no right to take anything from another by force. That is the definition of assault in all 50 jurisdictions.
Arbery's actions in attempting to wrestle the shotgun away from McMichael were not those of someone in fear of imminent bodily injury or death.
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Chasing him down in their vehicle, driving down several roads to cut him off, yelling at him, and finally getting out of the vehicle with a shotgun.
Those were threatening actions and Arbery had every right to fight for his life.
I will do your work for you:
https://law.justia.com/codes/georgia/2010/title-16/chapter-5/article-2/16-5-21https://law.justia.com/codes/georgia/2010/title-16/chapter-5/article-2/16-5-21
Simple assault:
(a) A person commits the offense of simple assault when he or she either:
(1) Attempts to commit a violent injury to the person of another; or
(2) Commits an act which places another in reasonable apprehension of immediately receiving a violent injury.
Aggravated Assault:
(a) A person commits the offense of aggravated assault when he or she assaults:
(1) With intent to murder, to rape, or to rob;
(2) With a deadly weapon or with any object, device, or instrument which, when used offensively against a person, is likely to or actually does result in serious bodily injury; or
(3) A person or persons without legal justification by discharging a firearm from within a motor vehicle toward a person or persons.
Make the case.
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