One central problem with this case is how little concrete information we have about that night. The reason is that after George Zimmerman killed Trayvon he was taken to police headquarters, apparently interviewed for a short period of time, and released. His weapon was not seized, forensics weren't taken and there was apparently very little investigating done at the scene.
Why would that be? The police say that they could not hold him, let alone arrest him, because he had asserted self defense and was therefore protected by the Florida self-defense statute. That is horsepuckey and here is why.
The Florida law covers justifiable force by police and civilians. There are three categories of justifiable force by non-police officers: self-defense, home protection and defense of others. The only one applicable here is the first. That section says that you can use deadly force if you reasonably think it is necessary to prevent death or great bodily harm. You can't use deadly force if you are only trying to prevent the use of unlawful force against you. The distinction between fear of "death or great bodily harm" versus protecting your self from "unlawful force" can be critical. Here is the language of the statute:
A person is justified in using force, except deadly force, against another when and to the extent that the person reasonably believes that such conduct is necessary to defend himself or herself or another against the other’s imminent use of unlawful force. However, a person is justified in the use of deadly force and does not have a duty to retreat if:
(1) He or she reasonably believes that such force is necessary to prevent imminent death or great bodily harm to himself or herself or another or to prevent the imminent commission of a forcible felony; or
(2) Under those circumstances permitted pursuant to (the section dealing with Home Protection)
As discussed below there is an exception to the "no duty to retreat" language for anyone who instigates an altercation. But before looking at this more closely it is important to understand the section of the law that the police asserted as the reason why they were prohibited from detaining or arresting Zimmerman and keeping his gun.
There is a section of the law that says the police can use "standard procedures" for investigating the use of force but any person whose actions are protected by this law is immune from detention, arrest or prosecution. These restrictions on detention and so on don't apply if the police have "probable cause" to think the self-defense claim is invalid. Taken together, this means Zimmermann had to be released, but not if the police had probable cause to believe his claim of self defense was not covered by the statute. Here is the actual text of the relevant portion of this section,
776.032 Immunity from criminal prosecution and civil action for justifiable use of force.—
(1) A person who uses force as permitted in (self-defense, home protection or defense of others) is justified in using such force and is immune from criminal prosecution and civil action for the use of such force . . . . As used in this subsection, the term “criminal prosecution” includes arresting, detaining in custody, and charging or prosecuting the defendant.
. . . . . .
So the police could not detain or arrest Zimmermann unless they had probable cause to believe that his actions were not covered by the law. If they had probable cause they could proceed with their investigation as if the law didn't exist.
The facts clearly suggest probable cause to question Zimmermann's self-defense claim. His assertion that he feared fears death or imminent bodily harm requires an analysis of the relative size, age, weight and strength of Zimmermann and Trayvon. This was not a case of a 120 pound eighty year old being assaulted by a 220 pound weight lifter. Based on pictures and other information Zimmermann's physical presence appears to be at least equal to Trayvon's. Next, one looks to see if the individuals have weapons. The reasonableness of any fear on Zimmermann's part is seriously undercut by the fact that he had a 9 mm handgun and Trayvon had no weapon of any sort. Additionally, when analyzing the validity of Zimmermann's claims it would also be noteworthy that he had a history of making bogus 911 calls about imaginary wrong doing. Finally, and as discussed below probably most importantly, Zimmermann told the 911 dispatcher he was following Trayvon Martin and was told to cease his pursuit. These facts clearly suggest there was probable cause to believe that Zimmermann's self-defense claim was invalid.
As mentioned above, there is a section of the law that really blows a hole in Zimmermann's self-defense claim and put the lie to the police assertion that he could not be detained or arrested. The law specifically provides that the self-defense protection does not apply for anyone who "provokes the use of force" against himself. The fact that Zimmermann pursued Trayvon Martin clearly suggests that he provoked whatever subsequently transpired. And this section goes on to say that if you provoke the confrontation then you cannot use force unless you have retreated and the person is still attacking you with overwhelming force. Here is the relevant portion of that section,
776.041 Use of force by aggressor.—The justification described in the preceding sections of this chapter is not available to a person who:
(1) Is attempting to commit, committing, or escaping after the commission of, a forcible felony; or
(2) Initially provokes the use of force against himself or herself, unless:
(a) Such force is so great that the person reasonably believes that he or she is in imminent danger of death or great bodily harm and that he or she has exhausted every reasonable means to escape such danger other than the use of force which is likely to cause death or great bodily harm to the assailant; or
(b) In good faith, the person withdraws from physical contact with the assailant and indicates clearly to the assailant that he or she desires to withdraw and terminate the use of force, but the assailant continues or resumes the use of force.
The evidence indicates that Zimmermann initiated and provoked this incident. There is no indication he retreated. There is no indication that he was faced with force that was likely to result in his death or great bodily harm.
Taken together Zimmermann's action do not appear to be covered by the self-defense law and, at the very least, the police had grounds to detain him and arrest him and conduct a thorough investigation to determine whether his actions were covered. Unfortunately, the failure to conduct a proper investigation at the time may make it hard to secure enough evidence to obtain a conviction now. Hopefully that will not be the case.