Robert Zimmerman has released a book about the case against his son, George, who is standing trial for the fatal shooting of 17-year-old Trayvon Martin. In it, he shares his views on "how and why" his son has been charged with murder .

Florida v. Zimmerman: Uncovering the Malicious Prosecution of my Son, George was released as an e-book Wednesday. The description reads simply: "This book describes how and why my son, George Zimmerman, has been charged with the crime of murder."

Racism has been an overarching issue since Martin, who was unarmed, was shot and killed on Feb. 26, 2012. Many believe Zimmerman, who is Hispanic, targeted the teen that night in Sanford, Fla., because of Martin's race. Zimmerman's father, however, disagrees with the portrait that has been painted of his son.

"As an adult, George continued to judge everyone as individuals, as he does today," Zimmerman writes in the prologue. "Many of George's closest and most trusted friends are African American. Although the FBI interviewed dozens of George's friends, neighbors, co-workers, and acquaintances, there is a tremendous amount of evidence that George is absolutely not a racist in any sense of the word."

In fact, he thinks the racism is coming from elsewhere.

In the chapter, Who Are The True Racists, according to Think Progress, Zimmerman uses words like "pathetic," "self-serving" and "disgrace" when describing the Congressional Black Caucus, the NAACP and Martin's funeral director, among others. He says he believes they are promoting a racist agenda in the United States and around the Martin case.