Parents of Jordan Davis and Trayvon Martin in Constant Touch

Feb. 19, 2014— -- The parents of Jordan Davis, the Florida teen who was fatally shot over loud music as he was sitting in a car, are in "constant contact" with the parents of Trayvon Martin, the teenager killed by George Zimmerman.

Lucia McBath and Ron Davis said on "Good Morning America" today they have drawn support from Martin's parents who went through a similar ordeal after Zimmerman was found not guilty last year in their son's shooting death.

"I'm in constant contact with Tracy Martin, Trayvon's father, and I text Sabrina (Trayvon's mother) all the time and I just want to let them know, every time I get justice for Jordan, it's going to be justice for Trayvon, for us," Ron Davis said.

Davis' son, Jordan, was killed by Michael Dunn, 47, when they argued over loud music in a convenience store parking lot Nov. 23, 2012. A jury found Dunn guilty of attempted murder for firing into the car where Davis and other teens were sitting, but were deadlocked on whether Dunn was guilty of murder. Dunn claimed he fired in self defense.

"The ultimate justice for me, I want Michael Dunn to be tried and found guilty of killing my son, of letting him know it was wrong to kill my unarmed, 17-year-old," Ron Davis said. "And all the other 17-year-olds out there, they shouldn’t have to fear the adults with the guns that are running around here shooting them at will."

The dad also cited the recent movie theater shooting in which an elderly former police officer shot and killed a man following an argument over texting. The fatal shot was fired after the victim allegedly threw popcorn at the gunman.

"If you throw popcorn in someone’s face, they want to shoot you because you threw popcorn in their face. That’s what we’ve come to, but we have to stop," Ron Davis said.

Florida's controversial "Stand Your Ground" law has been cited in both the Jordan Davis and Trayvon Martin killings although neither defendant invoked the clause.

"In Florida, you have the stand your ground instruction even though the defense, they don’t actually file for stand your ground. It’s in the instruction for self-defense and that confuses juries," Davis said.

McBath said, "Justice for Jordan will ultimately be really when we change the laws."

Davis and his wife have impressed with their poise following the verdict. McBath said recently they were praying for Dunn. The father said they have remained composed "Because you know you already have justice. People don’t realize that the justice in the court system is not the ultimate justice. God gives you justice and when people have indifference to life… just think about how a person like Michael Dunn would be so callous as to just disregard the life of Jordan Davis, you know, just throw it away like it was nothing. So I tell people out there that God is the ultimate justice."