Sometimes you can't prove your case. This sounds like one of those times, regardless of what actually happened. Zimmerman has a huge advantage because the state bears a high burden of proof and the only other direct witness (Martin) cannot testify.
My bigger problem with this case is that Zimmerman played neighborhood watch tough guy and took the law into his own hands. He followed Martin with a gun and obviously intended to confront him in some way. Whether his actions violated a criminal statute or were justifiable, he should have left the situation to the authorities. Had he, Martin would not have died that night and Zimmerman would not be sitting at the defense table.
My bigger problem with this case is that Zimmerman played neighborhood watch tough guy and took the law into his own hands. He followed Martin with a gun and obviously intended to confront him in some way. Whether his actions violated a criminal statute or were justifiable, he should have left the situation to the authorities. Had he, Martin would not have died that night and Zimmerman would not be sitting at the defense table.