BALTIMORE (WJZ)— Emotions are still running high 48 hours after a jury acquitted George Zimmerman of murder in the death of Trayvon Martin. Dozens of outraged protesters made their voices heard in Baltimore, many calling for federal charges against Zimmerman.

Kai Jackson explains what’s next in the contentious case.

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It’s unclear what the outcome of a federal investigation will be. What is clear is there are passionate feelings about the Martin case.

Sky Eye Chopper 13 was high above as Baltimoreans joined others across the nation in a protest of the Zimmerman verdict.

They rallied and marched from McKeldin Square on Pratt Street to City Hall. Many were upset that Zimmerman was acquitted of killing 17-year-old Trayvon Martin in Sanford, Fla.

Rachel Welborn and her cousin Adriana attended the rally.

“An innocent young man was killed and stalked for no reason,” Welborn said.

There are growing calls from the NAACP and others for the Justice Department to take action. Some believe the killing of Martin violated his civil rights.

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The Justice Department released a statement saying an examination of the case is underway.

“We are resolved as you are to combat violence involving or directed at young people,” said U.S. Attorney General Eric Holder.

“I think the verdict was a travesty of justice. It’s a horror. It’s terrible,” said Charlotte Walters.

While there are protests around the country, there are others who believe the legal system played itself out in court and George Zimmerman received his due process and was acquitted by a jury of his peers.

Zimmerman attorney Mark O’Meara says a Justice Department probe is unnecessary.

“The FBI has looked at this case for over a year and they never found any evidence of racism or inappropriate action by George,” O’Meara said.

Zimmerman is 29. His attorneys say their client will now request that the gun he used to kill  Martin be returned.

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Martin’s family was not present in the courtroom when the verdict was read.