NEW : Sgt 's attitudes on race not the issue , Trayvon Martin 's family attorney says . Multiple witnesses tell federal authorities that Martin is not racist . A co-worker says Zimmerman was `` devastated '' after George Zimmerman shooting . Zimmerman is accused of second -degree murder .
NEW : Zimmerman 's attitudes on race not the issue , Martin family attorney says . Multiple witnesses tell federal authorities that George Zimmerman is not racist . A co-worker says Zimmerman was `` devastated '' after Trayvon Martin 's shooting . Zimmerman is accused of second-degree murder .