The 28-year-old insurance-fraud investigator comes from a deeply Catholic background and was taught in his early years to do right by those less fortunate. He was raised in a racially integrated household and himself has black roots through an Afro-Peruvian great-grandfather - the father of the maternal grandmother who helped raise him.
A criminal justice student who aspired to become a judge, Zimmerman also concerned himself with the safety of his neighbors after a series of break-ins committed by young African-American men.
Though civil rights demonstrators have argued Zimmerman should not have prejudged Martin, one black neighbor of the Zimmermans said recent history should be taken into account.
"Let's talk about the elephant in the room. I'm black, OK?" the woman said, declining to be identified because she anticipated backlash due to her race. She leaned in to look a reporter directly in the eyes. "There were black boys robbing houses in this neighborhood," she said. "That's why George was suspicious of Trayvon Martin."
George Michael Zimmerman was born in 1983 to Robert and Gladys Zimmerman, the third of four children. Robert Zimmerman Sr. was a U.S. Army veteran who served in Vietnam in 1970, and was stationed at Fort Myer in Arlington, Virginia, in 1975 with Gladys Mesa's brother George. Zimmerman Sr. also served two tours in Korea, and spent the final 10 years of his 22-year military career in the Pentagon, working for the Department of Defense, a family member said.
In his final years in Virginia before retiring to Florida, Robert Zimmerman served as a magistrate in Fairfax County's 19th Judicial District.