The film's IMDb score was at a very low 2.8 with tens of thousands of votes even before it's launch date, forcing IMDb to suspend voting of the movie for some time. Many news sites concluded that the movie had been down-voted on IMDb for political reasons. On August 2021, the film's IMDb score of 3.5 was still far below that of other sites, like the Rotten Tomatoes score at 88%.
A lot of characters - mainly the young people that are surrounding Marighella in the film - are named after the actors who portray them, even though they are based on real people. This was a request from the cast itself, as they felt very attached to the project and to the film's narrative of resistance.
Maria Marighella, the granddaughter of Carlos Marighella and a good friend of director Wagner Moura, portrays her own grandmother in this film, Elza Sento Sé.
Directorial debut of Wagner Moura.
The film's domestic release was initially held back due to fear of it being hampered by ongoing calls to boycott it by conservatives and the government of then recently elected right-wing Brazilian President Jair Bolsonaro who claimed, among other things, that the country's 21 years under military rule - between April 1964 and March 1985 - was not a dictatorship.