Warning: This graphic video reportedly shows charred bodies from the assault on the protest camp at al-Nahda Square.
An eyewitness account here, "Clearing of Brotherhood’s Nahda Protest Site: An Eyewitness Statement." And on Facebook here.
More at #Nahda on Twitter.
And at the Middle East Monitor, "Egypt security forces launch operation in Rabaa al-Adawiya and Nahda squares."
Previous reports here and here, here, and here.