Cesar Chavez’s Family Criticizes R.F.K. Jr. for His Chavez Day Event

A campaign event on Saturday intended to galvanize support among Latino voters and organized labor behind Robert F. Kennedy Jr.’s presidential bid instead drew condemnation from the family of the labor organizer Cesar Chavez, who accused Mr. Kennedy of exploiting the Chavez name for political gain.

Mr. Kennedy’s campaign held a “celebration” of Chavez in Los Angeles ahead of March 31, Chavez’s birthday, which is recognized as an official holiday in California. The Kennedy family has a decades-long history of friendship and political partnership with the Chavez family, dating to Mr. Kennedy’s father, Robert F. Kennedy.

But in a letter Friday addressed to the campaign, Chavez’s eldest son, Fernando Chavez, writing on behalf of the Chavez family, asked Mr. Kennedy to stop referring to his father or using images of him, and threatened legal action.

“It causes us great pain to see your campaign repeatedly using our father’s images along with related documentary film and photographs of him to suggest the alignment of your campaign with the values of Cesar Chavez,” the letter said. “It is our sincere conviction that this association is untrue and deceptive.”

In a statement Saturday, Mr. Kennedy said the event was intended “to honor Cesar Chavez and his close friendship with my father, my family and me, and his impact on our country.” In an interview Sunday, he said he had repeatedly reached out to members of the family in the weeks before the event, but heard nothing until reporters called on Friday about the letter, which he said the campaign never actually received. (The letter was emailed on Friday to the campaign’s press office address, a family spokesman said.)

“Of course, if they had asked me, we would have done something