The 53-year-old officer was a contractor with the Department of Homeland Security.
Federal authorities say the suspected gunman, Steven Carrillo, had ties to the far-right anti-government extremist Boogaloo movement.
“The shooting was not a random act of violence.
Jacobs is seeking damages in excess of $25,000 from Facebook.
Facebook spokesman Kevin McAlister said the claims made in the lawsuit are “without legal basis.”
In June 2020, Facebook banned the boogaloo movement, designating it as a dangerous organization.