The elements of self-defense are (1) the absence of aggression or provocation on the part of the defendant; (2) the defendant's actual and honest belief that he or she was in imminent danger of death or great bodily harm; (3) the existence of reasonable grounds for that belief; and (4) the absence of a reasonable possibility of retreat to avoid the danger. State v. McKissic, 415 N.W.2d 341, 344 (Minn.App.1987) (citing State v. Johnson, 277 Minn. 368, 373, 152 N.W.2d 529, 532 (1967)); Minn.Stat. § 609.06, subd. 1(3) (1996).9 The degree of force used in self-defense must not exceed that which appears to be necessary to a reasonable person under similar circumstances. McKissic, 415 N.W.2d at 344 (citing State v. Bland, 337 N.W.2d 378, 381 (Minn.1983)). A defendant has the burden of going forward with evidence to support a claim of self-defense. State v. Graham, 371 N.W.2d 204, 209 (Minn.1985). Once it is raised, the state has the burden of disproving one or more of these elements beyond a reasonable doubt. State v. Spaulding, 296 N.W.2d 870, 875 (Minn.1980).
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Taken from here:
http://caselaw.findlaw.com/mn-supreme-c ... 80453.html