They say it won't stop until justice is served.    

On Friday, a second protest poured out of the University of Florida in support of Trayvon Martin, the Sanford teen who was killed in February.

The march was sponsored  by the NAACP's "Gator" chapter, and included people from all over the community.
However, not every sign out was for Trayvon.

"It seems like it would be very hard for him to have a fair trial and for him to get his constitutional rights," said Fran Ingram, who stood with a small group of people supporting George Zimmerman.

"He is innocent until proven guilty," said one man from that group.

The voices for Zimmerman were outnumbered on the steps of city hall, where hundreds of Trayvon Martin supporters marched from the University of Florida campus.

"If people don't speak out this kind of thing just keeps on happening," said Harris Max, a Gainesville resident who says Zimmerman must be arrested and charged with murder.

"How can this go on? That's not a society if that's the way things are going to be in the state," he said.

The group is calling for Zimmerman's arrest and murder charge, an FBI investigation into what they say is a racially motivated crime, and the termination of the Sanford police chief who they feel "covered up" Martin's case.