Question: Which of the films that American actress Susanna Thompson is known for was about the life of white supremacist Dyron De La Beckwith?

Context paragraphs:
Paul Saltzman: Paul Saltzman is a two-time Canadian Emmy Award-winning film and television producer-director with more than 300 films, both dramas and documentaries, to his credit.  The 2008 documentary feature, "Prom Night in Mississippi", featuring actor Morgan Freeman, premiered at the 2009 Sundance Film Festival.  His most recent film, the feature documentary, "The Last White Knight—Is Reconciliation Possible?"  premiered at TIFF (Toronto International Film Festival) in 2012.  It features Morgan Freeman, Harry Belafonte, Delay de la Beckwith (son of Byron De La Beckwith) as well as Saltzman himself.  He is also founder, CEO and president of the charitable, non-profit organization Moving Beyond Prejudice, which works with students, educators, youth-at-risk and community groups.

Addison Roswell Thompson: Addison Roswell Thompson, known as A. Roswell Thompson or as Rozzy Thompson (November 14, 1911 – February 15, 1976), was a segregationist and white supremacist who ran as a perennial fringe candidate for governor of the U.S. state of Louisiana, mayor of New Orleans, and other offices as well on fourteen occasions between 1954 and 1975.

Adolph Botnick: Adolph Ira "A. I." "B" Botnick (August 17, 1924 – October 8, 1995) was a Jewish activist in the Civil Rights Movement.  Botnick often sought to minimize violence in race relations.  Botnick was a target of an assassination plot by Byron De La Beckwith, who had previously assassinated civil rights leader Medgar Evers.  The assassination was prevented when De La Beckwith was arrested for transporting a bomb across state lines.

Only a Pawn in Their Game: "Only a Pawn in Their Game" is a song written by Bob Dylan about the assassination of civil rights activist Medgar Evers.  Showing support for the African Americans during the American Civil Rights Movement.  It was released on Dylan's "The Times They Are a-Changin'" album of 1964.  The song suggests that Evers' killer, Byron De La Beckwith does not bear sole blame for his crime, as he was only a pawn of rich white elites who incensed poor whites against blacks so as to distract them from their position on "the caboose of the train" in order create a more 'perfect white American society'.

Susanna Thompson: Susanna Thompson (born January 27, 1958) is an American actress.  She is known for her roles in films "Little Giants" (1994), "Ghosts of Mississippi" (1996), "Random Hearts" (1999) and "Dragonfly" (2002), and as Karen Sammler on ABC drama series "Once and Again" (1999–2002).  From 2012 to 2014, Thompson starred as Moira Queen as a regular cast member in the CW series "Arrow".

Bobby DeLaughter: Robert "Bobby" DeLaughter (born February 28, 1954) is an American Mississippi state prosecutor, judge, and author.  He is notable for prosecuting and securing the conviction in 1994 of Byron De La Beckwith, charged with the murder of the civil rights leader Medgar Evers on June 12, 1963.  Two earlier trials in Mississippi in 1964 had resulted in hung juries.

Ghosts of Mississippi: Ghosts of Mississippi is a 1996 American biographical courtroom drama film directed by Rob Reiner and starring Alec Baldwin, Whoopi Goldberg, and James Woods.  The plot is based on the true story of the 1994 trial of Byron De La Beckwith, the white supremacist accused of the 1963 assassination of civil rights activist Medgar Evers.

Byron De La Beckwith: Byron De La Beckwith, Sr. (November 9, 1920 – January 21, 2001) was an American white supremacist and Klansman from Greenwood, Mississippi, who in 1994 was convicted of assassinating civil rights leader Medgar Wiley Evers on June 12, 1963.  Two previous trials in 1964 on this charge had resulted in hung juries.  Seven years after being convicted of killing Evers, De La Beckwith died in prison in 2001 at the age of 80 while serving a life sentence.

National Emancipation of our White Seed: The National Emancipation of our White Seed party is a defunct extremist Christian Identity group founded and led by Reverend Dewey H "Buddy" Tucker in the early 1970s.  It was officially Incorporated by Tucker in the State of Tennessee on April 12, 1976.  The party's Christian Identity platform, which the core beliefs state that only the white race has souls, advocates Segregation, White Separatism, Racialism, Antisemitism, and Anti Taxation.  Individuals and organizations that have aligned with the "National Emancipation of our White Seed" include the Ku Klux Klan, National States' Rights Party, Byron De La Beckwith, Richard Butler, and Dan Gayman.

Michaela Dornonville de la Cour: Maria Susanna Michaela Dornonville de la Cour, also known simply as Michaela De la Cour or De la Cour, is best known as a singer in the Swedish pop music group Army of Lovers.

Supporting paragraphs: Susanna Thompson Ghosts of Mississippi
Answer: "Ghosts of Mississippi"