It’s been a difficult week for race relations and police violence. Two black men were gunned down by police officers, Alton Sterling on Tuesday in Baton Rouge, and Philando Castile the following day in Minnesota. And on Friday, a sniper killed five police officers and injured 11 others at a Black Lives Matter protest in Dallas.
The letters on the sign are formed from the individual names of victims of race-related violence, including Emmett Till, Trayvon Martin, Michael Brown, and Eric Garner.
It’s not the first time Facebook has shown support for Black Lives Matter. In February, Facebook CEO Mark Zuckerberg reportedly scolded his employees for crossing out “Black Lives Matter” written on signature walls across several Facebook offices. Facebook has also had Black Lives Matter posters in multiple offices around the world.