"[4] The campaign was started by a collective of Argentine female artists, journalists and academics, and has grown into "a continental alliance of feminist forces".

The collective takes its name from a 1995 phrase by Mexican poet and activist Susana Chávez, "Ni una muerta más" (Spanish for "Not one more [woman] dead"), in protest to the female homicides in Ciudad Juárez.

The protest was organized after the murder of 14-year-old Chiara Paez, found buried underneath her boyfriend's house on May 11, 2015, because she wanted to keep the baby and he did not, so he beat her to death when she was a few weeks pregnant.

[21] The transnational spread through the use of social media after the movement's birth in Argentina has allowed for different places to adapt to their local needs while maintaining a sense of solidarity.

On October 19, 2016, the Ni una menos collective organized a first-ever women mass strike in Argentina, in response to the murder of 16-year-old Lucía Pérez, who was raped and impaled in the coastal city of Mar del Plata.

[22][23] It consisted of a one-hour pause from work and study early in the afternoon, with protesters dressed in mourning for what was known as Miércoles negro (Spanish for "Black Wednesday").

These protests became region-wide and gave the movement a greater international momentum, with street demonstrations also taking place in Chile, Peru, Bolivia, Paraguay, Uruguay, El Salvador, Guatemala, Mexico and Spain.

[24][25] As a direct result of Ni Una Menos protests, the Registry of Femicides and the Centre for the Registration, Systematisation, and Monitoring of Feminicides were created to keep a better record of gender-based violence.

[26] Moreover, Ni Una Menos protests in Argentina are credited as a catalyst for the legalization of first-trimester elective abortion on December 30, 2020.

[32] People were mobilized and the march's logistics were planned over Facebook as tensions and frustrations about high levels of feminicide and the lack of a strong state response to this issue increased.

Cardinal Juan Luis Cipriani, a prominent religious leader condemned the legalization of abortion in cases of child rape and the expansion of sex education courses in schools.

This nationwide strike was carried out due to the lack of government involvement and cooperation to address and handle femicide, domestic violence, and other issues.

Within the same year, the news of the killings of two femicide cases in Puerto Rico was widespread and as a result, they received a lot of national attention and a big turnout for the Ni Una Menos demonstration on May 2, 2021.

Andrea Ruiz Costas was killed by her abusive ex-boyfriend in April 2021, after the court rejected the protection order she filed against him.

[38] As a result, activists and other Puerto Rican civilians took to the San Juan Teodoro Moscoso Bridge to protest against femicide and to call for justice for these victims.

[38] After the murder of nineteen-year-old woman Diana Garcia, a couple of Argentinian journalists and writers organized a reading marathon.

[40][41] "Ni Una Menos" became the slogan to promote the event on Facebook as Escales wanted to bring immediate attention to the alarming increase of femicides.

[42] She wrote: “Actrices, políticas, artistas, empresarias, referentes sociales...mujeres, todas, bah...no vamos a levantar la voz?

[39] Their main concerns being the government not properly giving justice to violence victims, abortion rights and the gender pay gap.

Margarita Saona points out the introduction of specific gender violence training for judges,[49] while Romina Accossatto and Mariana Sendra argue that lawmakers turned an attentive eye to the movement and subsequent marches.

[50] Because of the amount of involvement that the protests received, Argentina's Supreme Court and government took immediate action and started collecting data about gender based violence and approved a law that protects women from verbal and physical abuse.

[51] Another movement that incorporates Ni Una Menos values is the organization, Justicia para Nuestras Hijas, or Justice for Our Daughters.

Justicia para Nuestras Hijas is an activist group that advocates for the rights and justice of femicide victims in Chihuahua, Mexico.

This group is made up of family members and activists who seek justice for their daughters and want an end to femicide in Mexico.

The inclusion and welcoming of Black, indigenous, trans, and queer women has allowed the movement to gain a lot of support and followers.

[55] This event was spread on social media to reach international participation, where women from wherever they were located, were encouraged to engage in self-pleasure and be a part of what was explained to be a “sexual revolution” by the Ni Una Menos collective, whilst embracing different sexualities and identities within the broader Ni Una Menos movement.

Their missions are somewhat different since MeToo focuses on calling out perpetrators of sexual assault and harassment in positions of power, while Ni Una Menos pays more attention to femicide specifically.

The purpose of the movement was for women to find solidarity, support, and a safe space to share their stories of sexual assault and harassment.

[35] However, there still are strong indicators that the rise of the Ni Una Menos movement facilitated the abortion legalization process in Argentina.

[28] Conservative and religious sectors across Latin America have opposed the overlap between people that support the Ni Una Menos movement and these other rights.