Trayvon Martin Rally: Sharpton Headed to Fla. to "Fight for Justice"

Civil rights leader to stand side by side with Martin family.

The Reverend Al Sharpton broke his silence on the Trayvon Martin murder last night on MSNBC.

Sharpton, who is scheduled to have a rally this Thursday at 7 p.m. at the First Shiloh Baptist Church in Florida, said the 911 tapes were shocking and "they cry out for justice to be done."

He said he will be standing side by side with Martin's family.

"This family has only asked for justice," he said. "They've not called anybody names. They've acted in a dignified way. They deserve this nation's support, and we're coming to give it to them."

Sharpton also criticized the fact that George Zimmerman is still free after killing an unarmed teenager.

"If you have a young man dead, if you have no evidence at all that this young man did anything wrong, then what are they waiting on to make an arrest?" he said. "This seems pretty strange if not suspicious to me." He noted that, even though Florida law allows for the use of deadly force if a person thinks their life is in danger, it did not make sense that Zimmerman — who was older, stronger and carrying a weapon — would feel so scared.

"If he was following Trayvon, how could he feel under threat?" he asked.