You’ve probably seen the hashtag on Twitter, #jesuischarlie, in dedication to the shooting in Paris, France last Wednesday. “Je Suis Charlie” means “I am Charlie” in French, a show of solidarity with the French after a terrifying experience.

#CharlieHebdo and #JeSuisCharlie ranked number one and number two most popular hashtags respectively on Twitter alone the week of January 5-11. In the last month, #Charliehebdo was ranked the 18th most used hashtag while #JeSuisCharlie was ranked #30.

Both have made appearances on Instagram and Facebook, where Mark Zuckerberg himself used the hashtag in a post discussing and experience he had; declaring Facebook would not silence anyone’s opinions on any topic.

“Yet as I reflect on yesterday’s attack and my own experience with extremism, this is what we all need to reject — a group of extremists trying to silence the voices and opinions of everyone else around the world. I won’t let that happen on Facebook. I’m committed to building a service where you can speak freely without fear of violence,” CEO of Facebook, Mark Zuckerberg said.

The shooting was done by masked gunmen and resulted in 12 deaths, including the editor of the Charlie Hebdo publication and two police officers.

Charlie Hebdo is a satirical publication based in Paris, France and has published other cartoons referencing the Islamic religion that were criticized.

The rally in Paris on Sunday reportedly showed over one million people, with 40 world leaders that surprisingly included the leaders of Israel and Pakistan.

Sunday night showed many celebrities walking the red carpet at the Golden Globes with signs and pins that read the new phrase. The tragedy in Paris also made it’s way into many of their acceptance speeches.

“To reiterate what we’ve all been talking about, [Thursday] was an extraordinary day. There were millions of people who marched not just in Paris, but around the world. And they were Christians and Jews and Muslims. They were leaders of countries all over the world. And they didn’t march in protest; they marched in support of the idea that we will not walk in fear. We won’t do it. So, Je Suis Charlie. Thank you,” Actor George Clooney said.

Sources: http://finance.yahoo.com/news/mark-zuckerberg-well-never-let-114831930.html

http://www.thedailybeast.com/articles/2015/01/11/george-clooney-s-powerful-golden-globes-speech-on-his-love-for-amal-and-je-suis-charlie.html

http://hashtagify.me/popular (statistics)