Dr. Ruth Westheimer holds up an “I remember” sign.

Ahead of International Holocaust Remembrance Day on Friday, thousands of photos of people holding “We remember” or “I remember” signs have been broadcast on a screen set up at the site of the former Nazi death camp Auschwitz-Birkenau in Poland.

The project is a social media initiative organized by the World Jewish Congress (WJC) that is meant to raise global awareness about the Holocaust.

According to the WJC, the campaign has reached more than 100 million people and is likely the largest social media commemoration of the Holocaust to date.

People who wish to post photos can do so with the hashtag #WeRemember on Facebook, Twitter and Instagram.

“The goal is to reach those who don’t know much about the Holocaust, or who might be susceptible to those who deny it, and to remind the world that such horrors could happen again,” WJC CEO Robert Singer said in a statement. “Using the tools of social media we hope to engage the next generation, because, soon, it will be their responsibility to tell the story and ensure that humanity never forget.”

Prominent participants in the campaign include Democratic Senate Minority Leader Chuck Schumer, Israeli President Reuven Rivlin, Israeli Defense Minister Avigdor Lieberman and French philosopher Bernard-Henri Lévy, among many others.

New photos will be shown from 12 p.m. to 4 p.m. EST on Thursday. A livestream of the screen at Auschwitz-Birkenau can be viewed below: