The National Day of Remembrance and Action on Violence Against Women (French: Journée Nationale de Commémoration et d'Action Contre la Violence à l'Égard des Femmes), also known informally as White Ribbon Day (Jour du Ruban Blanc), is a day commemorated in Canada each December 6, the anniversary of the 1989 École Polytechnique massacre, in which armed student Marc Lépine murdered fourteen women and injured fourteen others in the name of "fighting feminism".

Canadian flags on all federal buildings – including the Peace Tower on Parliament Hill in Ottawa, Ontario – are flown at half-mast on December 6.

The victims of the 1989 massacre were Geneviève Bergeron, 21; Hélène Colgan, 23; Nathalie Croteau, 23; Barbara Daigneault, 22; Anne-Marie Edward, 21; Maud Haviernick, 29; Barbara Klucznik, 31; Maryse Laganière, 25; Maryse Leclair, 23; Anne-Marie Lemay, 22; Sonia Pelletier, 23; Michèle Richard, 21; Annie St-Arneault, 23; and Annie Turcotte, 20.

[3] In response to the event, many Canadians have worked hard to establish memorial sites all across the country to ensure that people will become more aware of the incident that occurred.

This effectively dismissed feminist analyses stating that “the killer went to this extent to proclaim his anti-feminist opinion.”[5]