Those 16 days start from today, 25th November to 10th December, which is Human Rights Day. It can also take many forms, including sexual harassment, physical/emotional/sexual violence by a partner, sexual violence by strangers and femicide, among others.
A crowd of around 5,000 joined the two-hour march on Friday organised by the Chilean Network against Violence towards Women, bringing traffic along one the city's main arteries to a standstill.
Sadiq also called upon the civil society, NGOs, worldwide development partners, media, corporate sector and particularly women to come forward and play their role for protection of women's rights against violence.
Another extreme case of violence against women is female genital mutilation, a harmful practice which has declined by 24 percent since 2000 but remains high in some of the 30 countries with representative data.
The protesters carried banners denouncing domestic violence and homicide against women on the iconic Istiklal Avenue, and played drums and chanted slogans: "Women are stronger together", "We want an entire life not small pieces".
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He said violence against women, both physical and mental, "happens everywhere and its consequences last for generations", and "this poses threats to social fabrics of societies around the globe".
In 2012, nearly half of all women who were victims of intentional homicide worldwide were killed by an intimate partner or family member, compared to 6% of male victims.
The organisations have developed several evidence-based tools to strengthen health care providers' abilities and health systems' capacity to respond to women who have experienced violence, which are available online.
Yet despite its pervasiveness, violence against women is not inevitable - and it is preventable.
In the United States, more than one in four women in Washington DC reported experiencing sexual harassment on public transportation, 65 percent of women in the USA testified that they experienced harassment of some kind on the street, and 23 percent testified that they had experienced sexual harassment in the street.
The UNiTE to End Violence against Women campaign invites you to "Orange the world", using the colour designated by the campaign to symbolize a brighter future without violence.