George Zimmerman is charged with second-degree murder in the Feb. 26, 2012, shooting death of 17-year-old Trayvon Martin in a gated community in Sanford. He maintains he fired his gun in self-defense and is not guilty.
In a two-page letter released Thursday through the Twitter account of her son, Robert, Gladys Zimmerman says her son, George, has been the victim of a "false narrative" of the case, CBS News reported.
"April 11, 2012, will be forever remembered by the Zimmerman family as the day the justice system failed us as Americans, and as a consequence an innocent man was arrested for a crime he did not commit, solely to placate the masses," she wrote.
She said media, and social media, made a rush to judgment before the evidence was available.
"It is astounding that despite the vast amount of information and evidence now available that support for George's self-defense claim, the majority of the media avoids its publication," she wrote.
George Zimmerman's trial is scheduled to begin in June.