A prolific journalist and essayist, Margarita Rivière Martí was notable for her defence of feminism during the Transition to Democracy. Together with Teresa Rubio, she was one of the first two female journalists ever to work for El Diario de Barcelona, and in 1978 she was a founding member of El Periódico de Catalunya, where she also headed the cultural section. She studied philosophy and literature at the University of Barcelona, and design in Paris, and dealt with subjects such as the phenomenon of fashion as a communicative and cultural system. She was also director of Agencia EFE in Catalonia. and a regular contributor to both La Vanguardia and El País. Her skills as an interviewer are also well known; among her guests were Elia Kazan, La Pasionaria, Yoko Ono, the Dalai Lama, Jordi Pujol and Pedro Almodóvar. In 1977, she co-wrote the first manual on contraceptives to be published in Spain, together with gynaecologist Santiago Dexeus. At that time, the sale and administration of contraceptives was permitted, but advertising them was forbidden by the penal code.
A prolific journalist and essayist, she examined issues like the phenomenon of fashion as a communicative and cultural system. She was the director of the EFE Agency in Catalonia, the culture director at El Periódico de Catalunya and a regular contributor to La Vanguardia and El País.