[Ol' Dan Tucker]

And, since the moment when the two found themselves face to face was unrecorded and, as far as we know, unwitnessed, nobody can say with any certainty (speculation but not certainty) who initiated the confrontation.

Not true. Martin was on the cell phone to his girlfriend when the confrontation started. She claims she recorded the conversation.

...She said the next thing she heard was Martin saying, “Why are you following me?” Then, Crump said, she heard another voice — presumably Zimmerman’s — saying, “What are you doing around here?”... (From: 'HE'S RIGHT BEHIND ME')

Since she says she heard Martin speaking to Zimmerman first, then Martin was the one initiating the confrontation.

[wtc911]

Martin's GF related what she said was the text of her conversation with him...not that she recorded it.

As evidence her statement has no value...it is unsubstantiated hearsay.

And, I would be careful about using her statement...it has zimmerman still following martin, not returning to his truck.