host the United We Stand Summit on Sept. 15, highlighting the “corrosive effects” of violence on public safety and democracy. Advocates pushed Biden to hold the event after 10 Black people were killed at a Buffalo, New York, supermarket in May, aiming as well to address a succession of hate-driven violence in cities including El Paso, Texas, Pittsburgh and Oak Creek, Wisconsin.

Here 10 black people shot in Chicago is almost a daily occurrence at this point…