Human Rights Watch has unveiled a report finding that Egypt’s killing of at least 817 unarmed protesters in a single day last year was a premeditated attack that likely amounted to a crime against humanity. A year ago on Thursday, Egyptian forces dispersed the Rabaa al-Adawiya sit-in as part of a systematic crackdown on protesters opposed to the ouster of President Mohamed Morsi. Human Rights Watch Executive Director Kenneth Roth presented the findings.

Kenneth Roth: “The Rabaa massacre was really one of the worst massacres of a demonstration in recent time, very much on a par with the massacres in Tiananmen Square in China in 1989 or the Andijan massacre in Uzbekistan in 2005. This is a crime against humanity, in the view of Human Rights Watch, which mandates that the authors be brought to justice. Now, Egypt has done nothing to investigate, in any public manner, this crime. There has been complete impunity inside Egypt. And so Human Rights Watch is calling on the international community to act.”

Roth and Middle East Director Sarah Leah Whitson had attempted to enter Egypt to present the report earlier this week, but they were detained and turned away.