Question: Fannie Lee Chaney, was an American baker turned civil rights activist after her son James Chaney, was murdered, by which organization?

Context articles: Myrlie Evers-Williams
Alton Wayne Roberts
James Chaney
C. P. Ellis
Murders of Chaney, Goodman, and Schwerner
Murder in Mississippi
Jonathan Daniels
Frances Taylor
Fannie Lee Chaney
Carolyn Goodman (psychologist)

Myrlie Louise Evers–Williams (née Beasley; born March 17, 1933) is an American civil rights activist of the Civil Rights Movement and journalist who worked for over three decades to seek justice for the murder of her civil rights activist husband Medgar Evers in 1963.
 She was also chairwoman of the NAACP, and published several books on topics related to civil rights and her husband’s legacy.
 On January 21, 2013, she delivered the invocation at the second inauguration of Barack Obama.
Alton Wayne Roberts (April 6, 1938 – September 11, 1999) was a Klansman convicted of depriving slain activists Michael Schwerner, Andrew Goodman and James Chaney of their civil rights in 1964.
 He personally shot two of the three civil rights workers before his accomplices buried their bodies in a dam.
James Earl Chaney (May 30, 1943 – June 21, 1964), from Meridian, Mississippi, was one of three American civil rights workers who were murdered during Freedom Summer by members of the Ku Klux Klan near Philadelphia, Mississippi.
 The others were Andrew Goodman and Michael Schwerner from New York City.
Claiborne Paul Ellis (8 January 1927 – 3 November 2005) was an American segregationist turned civil rights activist and trade union organizer.
 Ellis was at one time Exalted Cyclops of a Ku Klux Klan group in Durham, North Carolina, the city where he was born.
The murders of Chaney, Goodman, and Schwerner, also known as the Freedom Summer murders, the Mississippi civil rights workers' murders or the Mississippi Burning murders, involved three activists that were abducted and murdered in Neshoba County, Mississippi in June 1964 during the Civil Rights Movement.
 The victims were Andrew Goodman and Michael "Mickey" Schwerner from New York City, and James Chaney from Meridian, Mississippi.
 All three were associated with the Council of Federated Organizations (COFO) and its member organization the Congress of Racial Equality (CORE).
 They had been working with the Freedom Summer campaign by attempting to register African Americans in Mississippi to vote.
 This registration effort was a part of contesting over 70 years of laws and practices that supported a systematic policy of disenfranchisement of potential black voters by several southern states that began in 1890.
Murder in Mississippi is a 1990 television film which dramatized the last weeks of civil rights activists Michael "Mickey" Schwerner, Andrew Goodman and James Chaney, and the events leading up to their disappearance and subsequent murder during Freedom Summer in 1964.
 It starred Tom Hulce as Schwerner, Jennifer Grey as his wife Rita, Blair Underwood as Chaney, and Josh Charles as Goodman.
 Hulce received a nomination for Best Actor in a TV Miniseries at the 1990 Golden Globes.
Jonathan Myrick Daniels (March 20, 1939 – August 20, 1965) was an Episcopal seminarian and civil rights activist.
 In 1965 he was assassinated by a shotgun-wielding construction worker, Tom Coleman, who was a special county deputy, in Hayneville, Alabama while in the act of shielding 17-year-old Ruby Sales.
 He saved the life of the young black civil rights activist.
 They both were working in the Civil Rights Movement in Lowndes County to integrate public places and register black voters after passage of the Voting Rights Act that summer.
 Daniels' death generated further support for the Civil Rights Movement.
Frances Fink Taylor (born Pearl Frances Finkelstein, July 10, 1909 — December 8, 1979) was a New York music and film critic and a lyricist whose best-known song, "Those Three Are on My Mind" (with music by Pete Seeger) was a lament for the murdered civil rights workers - James Chaney, Andrew Goodman, and Michael Schwerner.
Fannie Lee Chaney (September 4, 1921 – May 22, 2007) was an American baker turned civil rights activist after her son James Chaney was murdered by the Ku Klux Klan during the 1964 Freedom Summer rides in Mississippi.
Carolyn Elizabeth Goodman (née Drucker; October 6, 1915 – August 17, 2007) was a clinical psychologist who became a prominent civil rights advocate after her son, Andrew Goodman and two other civil rights workers, James Chaney and Michael Schwerner, were murdered by the Ku Klux Klan in Neshoba County, Mississippi, in 1964.