Question: what is a movement an actor in A Flag is Born involved with for years? 

Context paragraphs:
Sunil Tagare: Sunil "Neil" Tagare (born c. 1962) is an entrepreneur.  He developed the concept of the Fiber-Optic Link Around the Globe (FLAG) project in 1989 when he was 27 years old.  FLAG was the first privately financed submarine fiber optic cable to link several continents around the world.  The cost of construction of the first phase was $1.5 billion.  As the executive vice president of Marketing and Business Development at NYNEX (now Verizon), Tagare was responsible for breaking through regulatory barriers in some of the most difficult countries in the world such as Spain, Italy, Egypt, India, Saudi Arabia, China, Hong Kong, Korea and Japan.  FLAG was featured in the Guinness Book of World Records as the longest telephone cable in the world and has been instrumental in lowering the cost of international calls to countries like India by an order of magnitude that facilitated the creation of new industries like offshore call centers.

Surendranath Tagore: Surendranath Tagore (1872–1940) was a Bengali author, literary scholar, and translator.  He is particularly noted for translating a number of works of Rabindranath Tagore to English.  A member of the Tagore family of Calcutta, he was born to Satyendranath Tagore and Gyanodanandini Devi in Bombay in 1872.  Surendranath's sister Indira Devi Choudhurani, born in 1873, was a noted littereaur, author and musician.  He graduated from St Xavier's college, Calcutta in 1893, and at an early stage in his life he became involved in the Indian nationalist movement.  He was involved in supporting strike by railway workers in Bombay in 1899, and subsequently became involved in the "Swadeshi" movement in Bengal, in opposition to the 1905 partition of Bengal.  Surendranath is also believed to have been involved in the early phase of revolutionary movement for Indian independence, when he served as the treasurer of the "Anushilan Samiti" established under Pramatha Mitra.  Surendranath is credited with establishing a number of Indian-owned banks and insurance companies through which he sought to encourage indigenous industries.

A Flag is Born: A Flag is Born is a 1946 play that advocated the creation of a homeland for the Jewish people in the ancient Land of Israel—at the time of the play's release Mandatory Palestine, under British administration.  With a cast including Paul Muni, Celia Adler and Marlon Brando, it opened on Broadway on September 4, 1946.  It was written by Ben Hecht and directed by Luther Adler, with music by Kurt Weill.  "A Flag is Born" was produced by the American League for a Free Palestine, an organization headed by Hillel Kook (known in America by the anglicized name Peter Bergson), to raise money for Zionist causes.

Miina Sillanpää: Miina Sillanpää (originally Vilhelmiina Riktig, 4 June 1866 in Jokioinen – 3 April 1952 in Helsinki) was Finland's first female minister and a key figure in the workers' movement.  In 2016 The Finnish government made 1 October an official day recommended to raise the Finnish flag in honour of Sillanpää.  She was involved in the preparation of Finland's first Municipal Homemaking Act.

Vinod Kinariwala: Vinod Kinariwala (1924-9 August 1942) was a student at Gujarat College in the city of Ahmedabad.  On 9 August 1942, the first day of the Quit India Movement led by Mahatma Gandhi, Kinariwala was shot dead by a British officer for trying to hoist the Indian flag while protesting in front of the college.  When the British officer, standing just a few feet from him, asked him to put the flag down, Kinariwala replied defiantly that he was not going to do anything of the sort.  The officer shot him.  Vinod Kinariwala was 18 years old at the time.

Salah Ameidan: Salah Ameidan (born 1982) is a Saharawi long distance runner.  He grew up in El Aiun.  At the age of 12, he was recruited for the Moroccan running team and sent to Rabat to train.  For ten years he participated in international races under the Moroccan flag.  By 1999 he was the triple cross-country champion for Morocco, had won 2nd place in the Africa Championships and was two-time Arab World Champion.  In 2004 during a race in France where he participated under the Moroccan flag, he raised the Saharawi flag above his head during the last few hundred metres of the race.  Immediately after that he sought political asylum in France, as this action would likely have led to imprisonment in Morocco.  Ameidan was imprisoned for a short period in 2009 after participating in a demonstration in El Aiun.  Since 2004 he has been competing with a French team in competitions organized by the French Sport Federations, but as a Sahrawi athlete in international competitions.  In 2013 a film, called "The Runner", was released about him by the Egyptian/Palestinian/British documentary film maker Saeed Taji Farouky.

Damodar Bangera: Damodar Bhai Bangera was an Indian freedom fighter involved in Quit India Movement who hoisted the Indian national flag on the roof of the Supreme Court of India.  He was imprisoned by the British government, but later awarded title of Rai Bahadur.  He was from Billawa community.

Marlon Brando: Marlon Brando Jr. (April 3, 1924 – July 1, 2004) was an American actor, film director and political activist.  He is widely credited with bringing realism to film acting.  He helped to popularize the Stanislavski system of acting, studying with Stella Adler in the 1940s.  Brando is widely known for his Academy Award-winning performances as Terry Malloy in "On the Waterfront" (1954) and Vito Corleone in "The Godfather" (1972), as well as his performances in "A Streetcar Named Desire" (1951), "Viva Zapata! " (1952), "Julius Caesar" (1953), "The Wild One" (1953), "Guys and Dolls" (1955), "Sayonara" (1957), "Last Tango in Paris" (1972), and "Apocalypse Now" (1979).  Brando was also an activist for many causes, notably the Civil Rights Movement and various Native American movements.

Josefa Joaquina Sanchez: Josefa Joaquina Sanchez (18 October 1765 - 1813) was a Venezuelan heroine who made the flag of the revolutionary movement, leading her to be considered the ("Bordadora de la primera Bandera de Venezuela") "embroiderer of the first flag of Venezuela".  Born in La Guaira, she was the daughter of Joaquin Sanchez and Juana Bastidas.

Movement director: A Movement director is involved with actor movement in a variety of production settings that include theatre, television, film, opera and animation.  Movement directors usually work closely with the director and the performers, collaborating with the creative team to realise the physical life of a work.  They propose a physical language to performers and directors, and devise training methods or teach skills that will help facilitate a specific physical style.  The movement director may create, or research and pass on, embodied information about etiquette, ethnicities (including proxemics, gestural language, social codes, etc.), a character’s condition (related to medical conditions within their historical context, and factors such as inebriation, pregnancy, etc.) and personal journey (ageing, etc.), as well as specialist movement (e.g. period dances, dexterity in falling, lifts and acrobatics, animal work, cross-gendered performance) or chorus work.

Supporting paragraphs: A Flag is Born Marlon Brando
Answer: Civil Rights