PHOTO GALLERY: Unity rally against terrorism draws more than 3 million in France

France’s Interior Ministry said the Paris rally for unity against terrorism on Sunday was the largest demonstration in France’s history — a march organized to show harmony after three days of attacks that left 17 dead.

Officials estimated 3.7 million people participated in the rally.

People light candles during a Unity rally Marche Republicaine on Sunday at the Place de la Nation (Nation square) in Paris in tribute to the 17 victims of a three-day killing spree by homegrown Islamists. The killings began on Jan. 7 with an assault on the Charlie Hebdo satirical magazine in Paris that saw two brothers massacre 12 people including some of the country’s best-known cartoonists, the killing of a policewoman and the storming of a Jewish supermarket on the eastern fringes of the capital which killed 4 local residents. | Getty Images

A woman pauses for a picture during a mass unity rally. | Getty Images

Dignataries including (L-R) Mayor Of Lille Martine Aubry, Hassen Chalghoumi Imam of the Drancy mosque, philosopher Marek Halter and UMP politician Eric Woerth join demonstrators in Place de la Republique. | Dan Kitwood/Getty Images

Thousands of people gather at Place de la Nation during a rally in Paris. | AP Photo/Thibault Camus

People light candles during the rally. | Getty Images

People take part in the Unity rally at the Place de la Nation in Paris. | Getty Images

A person places a candle at a collection of pens and tributes as the facade of the National Gallery is lit in the colours of the French flag. | AP Photo/Tim Ireland