Judge Debra Nelson is pictured on the second day of jury selection in the murder trial of George Zimmerman in Sanford, Florida in this file photo taken June 11, 2013. Nelson was expected to rule Friday on the admissibility of testimony from audio experts for the prosecution, suggesting that unarmed black teenager Trayvon Martin screamed for help before he was shot and killed by Zimmerman in February 2012
SANFORD, Fla. &@8212 The murder trial of George Zimmerman, whose fatal shooting of unarmed black teenager Trayvon Martin triggered nationwide protests last year, begins in earnest on Monday in a Florida courtroom.
Opening statements from lawyers outlining the basic facts in the case, and what they believe the evidence will show, are set to begin at 9 a.m. EDT.
RELATED: Watch live video from the trial by clicking here.
This follows two weeks of jury selection which ended last week with a panel of six female jurors chosen to decide Zimmerman's fate. Due to blanket media coverage the judge ordered the jury sequestered for the duration of the trial.
Zimmerman, who is 29 and part Hispanic, was the neighborhood watch captain in a gated community in Sanford at the time of the killing on February 26, 2012. He has pleaded innocent to the charge of second-degree murder and could face life imprisonment if convicted.
Martin, 17, was a student at a Miami-area high school and a guest of one of the homeowners in the Retreat at Twin Lakes community. He was walking back to the residence after buying snacks at a nearby convenience store when he was shot in the chest during a confrontation with Zimmerman.
Because Sanford police initially failed to arrest Zimmerman, on grounds that he acted in self-defense, many saw the killing as an example of second-class treatment of black victims in the U.S. criminal justice system.
That set off civil rights rallies and cries of injustice across the United States throughout much of last year. It also threw a spotlight on gun use and Florida's controversial self-defense laws.
Much of what happened during Martin's fatal encounter with Zimmerman is still a mystery. Neighbors who witnessed the scuffle and the fatal shot, albeit on a rainy night, are expected to testify.
Zimmerman claims Martin was the aggressor, but Assistant State Attorney Bernie de la Rionda, who is the lead prosecutor, says the younger man would be alive today had he not been profiled by Zimmerman as "a real suspicious guy."
Setting the stage for a possible fiery opening to the trial, presiding Seminole County Judge Debra Nelson overruled objections from the defense last week and said prosecutors could use such inflammatory terms as "vigilante" and "wannabe cop" in referring to Zimmerman.
She also ruled that prosecutors could say Zimmerman "profiled" Martin and "confronted" him, language suggesting that he initiated the altercation that led to Martin's death.
There is a high bar for the prosecution in a case that will center on Florida's aggressive self-defense laws, however. Under Florida's Stand Your Ground law, which was approved in 2005 and has since been copied by about 30 other states, people fearing for their lives can use deadly force without having to retreat from a confrontation, even when it is possible.
In instructions on "justifiable use of deadly force," that Nelson read to potential jurors last week, she noted that anyone in fear of grievous bodily harm or death is entitled to shoot and kill an assailant rather than back down.
"The danger facing the defendant need not have been actual," Nelson said, suggesting that mere perception of "danger" was enough to make it reality.
"If the defendant was not engaged in an unlawful activity, and was attacked in any place where he had a right to be, he had no duty to retreat and a right to stand his ground and meet force with force, including deadly force, if he reasonably believed that it was necessary do so," Nelson said.