Inside the Cairo massacre in 6 unbelievable scenes (PHOTOS)

CAIRO, Egypt — At least 278 people are dead and scores more injured in Egypt's bloodiest day since the uprising two years ago.

Police forces stormed a thousands-strong sit-in of supporters of the ousted President Mohamed Morsi, using live ammunition, armored bulldozers and tear gas to disperse the crowd.

More from GlobalPost: Egypt in Crisis (Full Coverage)

Egyptian photographer Mosa'ab Elshamy documented the violence.

Are you with The World?

The story you just read is available to read for free because thousands of listeners and readers like you generously support our nonprofit newsroom. Every day, the reporters and producers at The World are hard at work bringing you human-centered news from across the globe. But we can’t do it without you: We need your support to ensure we can continue this work for another year.

When you make a gift of $10 or more a month, we’ll invite you to a virtual behind-the-scenes tour of our newsroom to thank you for being with The World.