Protests with dignity

"There will be protests, but they must be carried out with dignity and discipline and let no act discredit the legacy of Trayvon Martin on the appeal of his family," civil rights leader Reverend Jesse Jackson said on CNN.

The NAACP, the largest US civil rights group, urged supporters to sign a letter asking Attorney General Eric Holder to file civil rights charges against Zimmerman.

"The most fundamental of civil rights - the right to life - was violated the night George Zimmerman stalked and then took the life of Trayvon Martin," read the NAACP letter.

The US Justice Department said on Sunday it will resume its probe into whether hate crime charges can be brought against Zimmerman following the Florida trial.

Federal prosecutors "will determine whether the evidence reveals a prosecutable violation of any of the limited federal criminal civil rights statutes within our jurisdiction", it said in a statement.

Florida police initially declined to press charges against Zimmerman, sparking mass protests in several US cities. He was eventually arrested in April 2012 and charged with second-degree murder and manslaughter.

With the acquittal, Zimmerman's lawyers told the Washington Post that they will immediately resume a defamation lawsuit against NBC News for selectively editing a phone call to police which made their client seem like a racist.

AFP-Reuters