Zelensky is one of the women behind the Manifesto of the 343 in 1971, a call for the decriminalization and legalization of voluntary interruption of pregnancy (IVG), which included medical procedures such as abortion.
In particular, she defended the position that women must gain access to political responsibilities, which was an unpopular opinion at the time in the feminist movement.
The FMA feminist association created a sub-organisation called SOS Femmes Alternative, which opened the first shelter for battered women in France in 1978.
She participated in the creation of the association "Hommes et Violences en privé," which opened the first reception and help centre for violent men in France in 1990.
The League, led by Simone de Beauvoir, directed its efforts to specific forms of sexism and proposed an anti-sexist bill in 1974, which was adopted by the government in 1983 but was never voted on.
In 1967 Zelensky founded a mixed-gender feminist organisation named Féminin Masculin Avenir (FMA) that preceded the MLF and included some of her close male friends, Roger Ribes and Charles Cassuto.
[2] However, Zelensky's attempt to involve men in the movement of feminism received immense backlash from separatist feminists as well as male-violence and misandry activists.
When men did contribute to the cause, they were mostly university-educated individuals, some directly involved in organizing feminist demonstrations and some were more in the periphery of women-led organisations.
Zelensky believed, based on a life of observations, that the stark difference between her experience in society as a white woman compared with that of her black peers meant the two issues, race and gender, were mutually exclusive battles and must be fought separately.
[8] Between 2007 and 2014, Zelensky was the editor of the Riposte Laïque,[9] a highly controversial, far-right anti-Muslim website that presented itself as part of the secular and counter-jihad movements under the name of laïcité.