Public health workers and gun safety advocates gathered at a rally Tuesday night to commemorate last week’s deadly shooting near Emory University and the Centers for Disease Control and Prevention, and demand policy changes to prevent future instances of gun violence.

A gunman, who reportedly believed he was sick from the COVID-19 vaccine, is dead after opening fire at Emory University, near the Centers for Disease Control and Prevention headquarters. A police officer who was critically wounded responding to the shooting later died in the hospital.

ATLANTA (AP) — A suspected gunman and a police officer are dead after law enforcement responded to reports of an active shooter near the adjoining campuses of the U.S. Centers for Disease Control and Prevention and Emory University on Friday, authorities said.