Social networking sites, text messages, phone calls - the message to reach India Gate, the venue for the high-voltage protest, travelled through all possible mediums, resulting in thousands of people gathering at the site.
Armed with gadgets, a large number of youngsters, along with senior citizens, housewives and children reached the venue early morning and posted photos straight from the spot on social networking sites, urging people to join them.
A number of people even uploaded videos to show the barbarity of the police which used water cannons and lobbed tear gas shells at the protesters.
"I received many text messages from friends. Initially I was hesitant, but when I saw their pictures on Facebook and other sites I also got motivated to be the part of protest," said Akash Singh, a resident of Malviya Nagar.
A number of people posted about the protest on Facebook.
"My friends formed a group on Facebook asking people to join the protest. All my friends were at India Gate, demanding justice for the 23-year-old woman who was brutally raped. Though my parents were not willing to send me, they gave me permission after they saw such a huge gathering," said Rashmi Khanna, a second year student of Delhi University.
In the past few days, social networking websites have been abuzz with messages and posts about the need for women's safety.
Netizens have been playing a crucial role in asking people to join protests and for discussing the issue of rape.
Several activist groups and NGOs have launched various movements and put up petitions for signatures to push the authorities for swift action.