Question: Who was more known for his political activism, André Breton or Alexander Blok?

Context paragraphs:
Alexander Blok: Alexander Alexandrovich Blok (Russian: Алекса́ндр Алекса́ндрович Бло́к ; ] ; 28 November [O.S. 16 November] 1880 7 August 1921) was a Russian lyrical poet.

Russian literature: Russian literature refers to the literature of Russia and its émigrés and to the Russian-language literature of several independent nations once a part of what was historically Rus', the Russian Empire or the Soviet Union.  The roots of Russian literature can be traced to the Middle Ages, when epics and chronicles in Old Russian were composed.  By the Age of Enlightenment, literature had grown in importance, and from the early 1830s, Russian literature underwent an astounding golden age in poetry, prose and drama.  Romanticism permitted a flowering of poetic talent: Vasily Zhukovsky and later his protégé Alexander Pushkin came to the fore.  Prose was flourishing as well.  The first great Russian novelist was Nikolai Gogol.  Then came Ivan Turgenev, who mastered both short stories and novels.  Leo Tolstoy and Fyodor Dostoyevsky soon became internationally renowned.  In the second half of the century Anton Chekhov excelled in short stories and became a leading dramatist.  The beginning of the 20th century ranks as the Silver Age of Russian poetry.  The poets most often associated with the "Silver Age" are Konstantin Balmont, Valery Bryusov, Alexander Blok, Anna Akhmatova, Nikolay Gumilyov, Osip Mandelstam, Sergei Yesenin, Vladimir Mayakovsky, Marina Tsvetaeva and Boris Pasternak.  This era produced some first-rate novelists and short-story writers, such as Aleksandr Kuprin, Nobel Prize winner Ivan Bunin, Leonid Andreyev, Fyodor Sologub, Aleksey Remizov, Yevgeny Zamyatin, Dmitry Merezhkovsky and Andrei Bely.

Suzanne Muzard: Suzanne Muzard or Musard (1900–1992) was a French prostitute and photographer associated with surrealism.  The lover of André Breton, she was addressed in Breton's love poems.

Philippe Soupault: Philippe Soupault (2 August 1897, Chaville, Hauts-de-Seine – 12 March 1990, Paris) was a French writer and poet, novelist, critic, and political activist.  He was active in Dadaism and later founded the Surrealist movement with André Breton.  Soupault initiated the periodical "Littérature" together with the writers Breton and Louis Aragon in Paris in 1919, which, for many, marks the beginnings of Surrealism.  The first book of automatic writing, "Les champs magnétiques" (1920), was co-authored by Soupault and Breton.  In 1927 Soupault, with the help of his wife Marie-Louise, translated William Blake's "Songs of Innocence and Experience" into French.  The next year, Soupault authored a monograph on Blake, arguing the poet was a "genius" whose work anticipated the Surrealist movement in literature.  He directed Radio Tunis from 1937 to 1940, when he was arrested by the pro-Vichy regime.  He fled successfully to Algiers.

Surrealist automatism: Surrealist automatism is a method of art making in which the artist suppresses conscious control over the making process, allowing the unconscious mind to have great sway.  Early 20th century Dadaists, such as Hans Arp, made some use of this method through chance operations.  Surrealist artists, most notably André Masson, adapted to art the automatic writing method of André Breton and Philippe Soupault who composed with it "Les Champs Magnétiques" (The Magnetic Fields) in 1919. " The Automatic Message" (1933) was one of Breton's significant theoretical works about automatism.

Seven Romances on Poems by Alexander Blok: Seven Romances on Poems by Alexander Blok (Op. 127) is a vocal-instrumental suite by Russian composer Dmitri Shostakovich.  It was inspired by verses of poet Alexander Blok (1880–1921).

André Breton: André Breton (] ; 19 February 1896 – 28 September 1966) was a French writer, poet, and anti-fascist.  He is known best as the founder of Surrealism.  His writings include the first "Surrealist Manifesto" ("Manifeste du surréalisme") of 1924, in which he defined surrealism as "pure psychic automatism".

Littérature (magazine): Littérature was a literary magazine edited by André Breton, Philippe Soupault, and Louis Aragon.  Its first issue was published on March 19, 1919.  Because of dwindling circulation, Breton decided to terminate publication after the August 1921 issue.  In March 1922, however, he relaunched the magazine with the cover illustrating a Man Ray drawing of a shiny top hat, and the title, ""Littérature": New Series."  Breton remained the only one in charge of the review, after the departure of Aragon and Soupault, and to mark the review's change of direction, Breton decided to replace the cover image created by Man Ray with drawings – different each time – by Francis Picabia, to whom he gave carte blanche for each issue.  Picabia drew on religious imagery, erotic iconography, and the iconography of games of chance.

Exposition Internationale du Surréalisme: The Exposition Internationale du Surréalisme was an exhibition by surrealist artists that took place from January 17 to February 24, 1938, in the generously equipped Galérie Beaux-Arts, run by Georges Wildenstein, at 140, Rue du Faubourg Saint-Honoré in Paris.  It was organised by the French writer André Breton, the surrealists' brain and theorist, and Paul Éluard, the best known poet of the movement.  The catalogue listed, along with the above, Marcel Duchamp as generator and arbitrator (to appease the partly fierce conflicts mainly between Breton and Éluard), Salvador Dalí and Max Ernst as technical advisers, Man Ray as head lighting technician and Wolfgang Paalen as responsible for the design the entrance and main hall with "water and foliage".  The exhibition was staged in three sections, showing paintings and objects as well as unusually decorated rooms and mannequins which had been redesigned in various ways.  With this holistic presentation of surrealist art work the movement wrote exhibition history.

Anthology of Black Humor: The Anthology of Black Humor (in French "Anthologie de l'humour noir") is an anthology of 45 writers edited by André Breton.  It was first published in 1940 in Paris by Éditions du Sagittaire and its distribution was immediately banned by the Vichy government.  It was reprinted in 1947 after Breton's return from exile, with a few additions.  In 1966, Breton, ""having resisted the temptation to add more names"", published the book again and called this edition "the definitive".

Supporting paragraphs: André Breton Alexander Blok
Answer: André Breton