Ethel Kennedy, the widow of Robert Kennedy, has announced that she is joining a hunger strike in protest against President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE's "zero tolerance" immigration policy.

The 90-year-old human rights advocate will participate in the "Break Bread Not Families" hunger strike. The protest was organized by several activist groups, including the Robert F. Kennedy Human Rights nonprofit, and a number of prominent people are participating in the strike.

Nearly 40 other Kennedys have joined the strike as well. ADVERTISEMENT

The fast started on Sunday and is set to go on for 24 days — symbolizing the approximately 2,400 migrant children that have been separated from their parents. In place of the meals participants would have eaten, organizers ask that protesters instead donate money to help migrant families.

According to The Boston Globe, Kennedy denounced Trump's "zero tolerance" policy and said his executive order ending migrant family separation was not enough.

“Generations of Americans did not toil and sacrifice to build a country where children and their parents are placed in cages to advance a cynical political agenda,” Kennedy said.

Kennedy is the latest prominent figure to join in the overwhelming bipartisan backlash over migrant family separations, which were a direct result of the "zero tolerance" policy. Democrats and Republicans alike have called family separations “cruel” and “inhumane.”

Attorney General Jeff Sessions Jefferson (Jeff) Beauregard SessionsGOP set to release controversial Biden report Trump's policies on refugees are as simple as ABCs Ocasio-Cortez, Velázquez call for convention to decide Puerto Rico status MORE announced the zero tolerance initiative in April, saying the Justice Department would criminally prosecute all adults who cross the border illegally. The prosecutions, he acknowledged at the time, would result in children being separated from parents who were taken into custody.

Trump last week signed an executive order ending the separation of families, but which kept the "zero tolerance" policy in place.