Joe Oliver appeared on MSNBC's The Last Word on Tuesday night to defend his friend, George Zimmerman, the 28-year-old neighborhood watch member who admitted to killing Trayvon Martin. And things got very intense. "I'm stepping forward for George because this was not a racial incident," Oliver said. "I'm stepping forward for George because of how it has it ignited all the racial tensions that we've had here for years. I understand everything that everyone is out there marching about because I've experienced it myself. And I wouldn't put myself on the line like this if I didn't know in my heart that George Zimmerman was in a life-or-death struggle."