大美格州法：Stand Your Ground， Duty to Retreat，有的州要求你使用武力前的先撤

State-by-State Summary

State	Stand Your Ground	Castle Doctrine	Duty to Retreat
Alabama	? Yes	? Yes	? No
Alaska	? Yes	? Yes	? No
Arizona	? Yes	? Yes	? No
California	? No	? Yes	? Yes (in public)
Colorado	? No	? Yes (Make My Day Law)	? Yes
Florida	? Yes	? Yes	? No
Georgia	? Yes	? Yes	? No
Illinois	? No	? Yes	? Yes (some exceptions)
Indiana	? Yes	? Yes	? No
Louisiana	? Yes	? Yes	? No
Massachusetts	? No	? Yes (limited)	? Yes
Michigan	? Yes	? Yes	? No
Mississippi	? Yes	? Yes	? No
Nevada	? Yes	? Yes	? No
New York	? No	? Yes (limited)	? Yes
North Carolina	? Yes	? Yes	? No
Ohio	? Yes (since 2021)	? Yes	? No
Oregon	? No	? Yes	? Yes
Pennsylvania	? Yes (limited)	? Yes	? No (with exceptions)
Texas	? Yes	? Yes	? No
Utah	? Yes	? Yes	? No
Washington	? Yes	? Yes	? No
Wisconsin	? Yes (in most situations)	? Yes	? No

Term	Description
Duty to Retreat	Requires you to retreat (if safely possible) before using deadly force in public.
Stand Your Ground	No duty to retreat before using deadly force in public if you are lawfully present.
Castle Doctrine	No duty to retreat when defending yourself at home (and sometimes workplace or vehicle).