Documents from the shooter’s home showed his discontent with coronavirus vaccines, authorities said. CDC workers want RFK Jr. to denounce vaccine misinformation.

On Sunday, CNN reported that the CDC held a video conference with approximately 800 staff members to discuss the traumatic event and allow them to ask questions. Staff said they felt like "sitting ducks" as bullets whizzed just over their cubicle walls and they dove for the floor.

President Donald Trump’s Health Secretary, Robert F. Kennedy Jr., also described political violence as “wrong” and said his job is to protect employees.