A woman holds up a sign that translates to "I am Charlie," honoring the journalists who were killed at the Paris office of the Charlie Hebdo magazine.
"I have lived in Paris for 40 years and have covered many of the most important international news stories of these past several decades," Turnley said. "On several occasions today, tears came to my eyes as I saw the sights and heard the voices and songs."
"Today France spoke with a unified loud voice and said no to terrorism and yes to freedom of speech, liberty and democracy," Turnley said.
A girl holds a flower in Place de la Republique, a square in Paris.
The pencil has become a popular rally symbol, honoring the slain Charlie Hebdo cartoonists.
A demonstrator holds a sign that translates to "Urgent: More democracy everywhere against barbarism."
French flags were proudly waved at the rally. "They collectively shouted, 'Vive la France!' " Turnley said.
"I have seen -- in places like Berlin, Beijing, Prague, Bucharest and South Africa -- the power of people when they stand up and hold hands and take a stand for what is right," Turnley said.
A woman holds a flower at the rally.
"Today, France stood together with millions of voices and hands together (and) expressed their pride and love for the values of freedom, love for each other and for their country, and for life itself," Turnley said.
The rally began with a march through Paris streets at 3 p.m., but many stayed into the night.
A woman holds up a pencil during the rally.
The French Mission to the United Nations said the rally was the largest mass gathering in France's history.
"Today's rally offered a vision for the entire world ... of how beautiful and wonderful life can be when people stand together unified against violence and in defense of freedom," Turnley said.
"Je suis Charlie" has been a popular rallying cry not only in France, but across the world.
A young woman holds up a sign as she sits on someone's shoulders.
Turnley said the crowd included people from many different backgrounds.
"I have now lived more than half my life in Paris ... and today, like millions of others around me, I was Charlie and my heart was French," Turnley said.
People in the crowd hold up flowers, pencils and pens.
A couple kisses during the rally.