After Casey Anthony acquitted her son in 2011, a crowd outside the court in Florida booed for appeal because she believed she was guilty.

The case of the nickname "America's most hated mother" began on July 15, 2008, when Cindy Anthony, Casey's mother, panicked to call the police department of Orlando, Florida, to

Casey told the police that she sent Caylee at a babysitter's apartment called Zenaida Gonzalez, but both went missing when she returned.

On July 16, Casey was arrested on charges of perjury, possibly abusing children, and obstructing criminal investigations.

On October 14, 2008, Casey was charged with seven offenses, including first-degree murder, serious child abuse, manslaughter and perjury, but she claimed to be innocent.

In April 2009, prosecutors announced that they intended to propose a death sentence for Casey.

However, Jose Baez, Casey's defense lawyer, said Caylee accidentally drowned in the family pool on June 16, 2008, adding that George Anthony, Casey's father, helped her hide her body.

Baez also protected his client by revealing that Casey had been sexually abused by his father and brother, arguing that she hid her daughter's death in the same way that she had remained silent about the secret all along.

The trial process lasts about 6 weeks.

After 10:40 am discussion, a 12-member jury at the 9th District Court of Appeals in Florida declared Casey acquitted on murder and manslaughter charges, only accusing her of perjury with a 4-year sentence.

Jennifer Ford, one of the jurors, said they cried and felt deeply hurt after the verdict was given.

Casey's DNA was not found on the tape or anything else.

Jeff Ashton, a prosecutor in Florida, said that besides having no evidence, the cause of death is also an important reason for the jury's decision.

Robert Shapiro, a lawyer in Los Angeles, explained that the US constitutional criminal justice system prioritizes the protection of innocent people, that is, "it is better to let a person guilty of freedom than to condemn someone."

According to Shapiro, the media plays an important role in causing the public to resent the jury's verdict.

In a series of interviews with the AP in 2017, Casey, now 34, said she was the victim of a rush of public judgment.