What is #BlackOutDay?
In a show of community and solidarity, for those 24 hours, we are exclusively posting and reblogging pics,
gifs, videos, selfies, etc. of Black people. We want to show that Black
History is happening today, right now. That we are all Black History.
(credit: incogneeco in a message to Chescaleigh)
— from whatwhiteswillneverknow
more information here