#MarDelPLata #Femicidio Caso Lucía Pérez: despidieron al Secretario de Seguridad marplatense https://t.co/EG1jBQcLXj pic.twitter.com/F1obtSp8H0— Agencia Télam (@AgenciaTelam) October 15, 2016
She was held her against her will at the home of one of the men, where she was reportedly given large amounts of cocaine and marijuana, then repeatedly gang-raped and penetrated with a wooden pole, the newspaper reported.
The assault caused Pérez so much pain that she went into cardiac arrest, BBC News reported.
Two men brought Pérez's body to a local medical center, claiming she had overdosed on drugs, BBC reported. They had washed Pérez's body and changed her clothes beforehand, according to the Independent, but doctors noticed signs of "violent sexual penetration" upon closer inspection of the girl's injuries.
"I know it’s not very professional to say it, but I’m a mother and a woman," lead prosecutor María Isabel Sánchez said last week, according to the Independent. "And I’ve seen a thousand things in my career, but nothing equal to this litany of abhorrent acts."
The authorities named three suspects in the case, according to El Pais: Matías Farías, Juan Pablo Offidani and Alejandro Alberto Masiel.
Sanchez said police found several used condoms and sex toys at Farías's home, where the rapes allegedly occurred, the paper reported.
The gruesome case prompted calls for Argentine women to wear black on "Miercoles Negro," or "Black Wednesday," and to go on strike for an hour, regardless of their occupations.
"In your office, school, hospital, law court, newsroom, shop, factory, or wherever you are working, stop for an hour to demand 'no more machista violence,'" the march organizers wrote, according to BBC News.
"Machista violence" refers to violence spurred by male chauvinistic behavior.
Since her death, Pérez's grieving family members have joined in marches calling for an end to domestic violence and other horrific treatment of women.
"We can't understand such barbarity," her mother, Marta, told BBC News. "It's impossible to understand."
"The way they killed her was inhuman," Pérez's father, Guillermo, told the station.
In an emotional statement published by La Poderosa, the victim's brother, Matías, remembered his sister as someone who loved art, rock music and animals. Authorities initially refused his request to identify her body, until her brother insisted, he said.
Though the three suspects were in custody, Matías wrote that it was "not enough." He urged people to protest in the streets against such violence, saying it could happen to anyone.
"Only in this way will we prevent thousands more Lucía's being killed," Matias Pérez wrote. "And then we can close [Lucía's] eyes and see her rest in peace."
On Wednesday, the hashtag #NiUnaMenos — Spanish for "not one less" and the name of a movement to protest femicide — was trending on Twitter in Argentina.
Several politicians and other high-profile figures joined in support.
Por Florencia Aguirre de Coyhaique. Por Lucía Pérez de Mar del Plata. Por todas las mujeres, yo digo con fuerza #NiUnaMenos.— Michelle Bachelet (@mbachelet) October 19, 2016
"For Florencia Aguirre de Coyhaique. For Lucía Pérez of Mar del Plata," Michelle Bachelet, the president of Chile, tweeted in Spanish. "For all women, I say with strength: Not One Less."
Florencia Aguirre was a 9-year-old girl whose body was found in her stepfather's woodshed in southern Chile this month, officials said.
Last year, the Ni Una Menos campaign also mobilized thousands across Argentina, as well as in Uruguay and Chile, to protest violence against women.
The demonstrations in June 2015 were sparked by outrage over similarly shocking cases.
In May of that year, a man allegedly beat his pregnant 14-year-old girlfriend to death, then buried her body in his courtyard, USA Today reported. A month earlier, the husband of a kindergarten teacher who had requested a divorce reportedly barged into her classroom — and slit her throat in front of her students, according to Agence France-Presse.
According to Ni Una Menos, one woman is killed every 30 hours in Argentina "just for being a woman."
Argentina’s Supreme Court recorded 286 murders of women "as a result of gender violence" in 2015, according to the Guardian.
Of the victims, 18 percent were younger than 20; 43 percent were ages 21 to 40.
Violence against women is not limited to Latin America and is a global problem, according to the United Nations, which cites "physical violence inflicted by an intimate partner" as the most common form of violence women around the world experience.
According to World Bank data, rape and domestic violence pose a greater risk to women between ages 15 and 44 than cancer, car accidents, war and malaria, the United Nations stated.
"Violence against women is not confined to a specific culture, region or country, or to particular groups of women within a society," the United Nations stated. "The roots of violence against women lie in persistent discrimination against women."