Facebook displays 'Black Lives Matter' posters on campuses

Facebook has Black Lives Matter posters on display at campuses around the world. 

A Facebook spokesperson confirmed the posters are currently up at multiple offices. 

Facebook held a moment of silence on Friday, for the people who died last week. 

Facebook CEO Mark Zuckerberg commented on his Facebook page following the shooting of Philando Castile, which occurred in Falcon Heights, Minnesota. 

Castile was shot multiple times by an officer. His girlfriend streamed the aftermath of the shooting on Facebook Live. Zuckerberg wrote, "Yesterday, a Minnesota woman named Diamond Reynolds went live on Facebook immediately after her fiancé, Philando Castile, had been shot by police in his car. Philando later died from his wounds. In the video, Diamond's 4-year-old daughter is watching from the back seat. My heart goes out to the Castile family and all the other families who have experienced this kind of tragedy. My thoughts are also with all members of the Facebook community who are deeply troubled by these events. The images we've seen this week are graphic and heartbreaking, and they shine a light on the fear that millions of members of our community live with every day. While I hope we never have to see another video like Diamond's, it reminds us why coming together to build a more open and connected world is so important -- and how far we still have to go."

Facebook employees posted photos of the Black Lives Matter signs on social media. It's unclear how long the posters will be on display.