Nearly 1,000 people attended the rally, which was held at the Durham Armory on Foster Street in downtown Durham.
N.C. Attorney General Roy Cooper attended the rally and was a keynote speaker.
"Cross burning with this intent to intimidate and incite violence is an act of domestic terrorism," Cooper said.
Blue ribbons were handed out to represent the values of peace, unity and reconciliation, and people of all races were asked to join hands and pray together.
"The unity has lasted for twelve days, but can it last for twelve more and twelve more after that?" Larry Holt, who is a member of the Durham Human Relations Commission, said in an address during the rally.
Federal investigators are still examining the crosses for evidence and for leads.
The reward for information leading to arrests is $22,000 and growing.
Anyone with information about the burning crosses should contact Durham CrimeStoppers at
, the Durham Police Department's Special Operations Division at
, or the FBI at
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