MIAMI BEACH, Fla. -

The mother of slain Florida teenager Trayvon Martin and a prominent black lawyers' organization are keeping up the pressure for repeal of "stand your ground" self-defense laws.

Martin's parents, their attorney Benjamin Crump and members of the National Bar Association discussed their plans to address what they say are inequalities in the U.S. justice system.

"The thing about this law is, it assisted the person who killed my son to get away with murder," said Martin's mother Sybrina Fulton. "We need to change the laws so people don't get away with murder."

Crump joined Fulton, speaking before the National Bar Association-- a group composed primarily of African-American lawyers.

"We shouldn't call it stand your ground, too noble, we should call it make my day laws," Crump said. "That is what we are doing here ... they feel empowered."

George Zimmerman was acquitted this month of second-degree murder and manslaughter charges in Martin's 2012 death. Zimmerman said he shot at the unarmed 17-year-old in self-defense.

The verdict sparked protests and calls for federal officials to charge Zimmerman with violating Martin's civil rights. Federal officials are reviewing the case.

Florida lawmakers say it is unlikely the state's "stand your ground" law will be repealed.