MEXICO CITY — No women in offices or schools. No women in restaurants or stores. No women on public transportation, in cars or on the street.

A country without women, for one day.

That’s the vision of an alliance of feminist groups in Mexico that — fueled by the rising violence against women and girls, including two horrific murders that appalled the nation this month — have called for a 24-hour strike by the country’s female population on March 9.

The action is to protest gender-based violence, inequality and the culture of machismo, and to demand greater support for women’s rights. Promoted under the hashtag #UNDÍASINNOSOTRAS, A Day Without Us, it has gained extraordinary momentum across this country of more than 120 million, with wide-ranging buy-in from the public and private sectors, civic groups, religious leaders and many, if not most, women.

The support has cut across the boundaries of class, ethnicity, wealth and politics that fracture this nation, and has given organizers hope that this might be not just a monumental event but also a watershed moment in the modern history of Mexico.