(AURN) -- Lawyers for George Zimmerman are stressing the importance of Trayvon Martin's school records and social media posts as the documents could be valuable to the outcome of the upcoming murder trial. Zimmerman was a neighborhood watch volunteer in a Florida who shot African-American unarmed teen Trayvon Martin as he walked home from a convenience store. The story became a media firestorm, including rallys and protests from people seeking justice for Trayvon.