LOS ANGELES — The gunman who opened fire in a Monterey Park ballroom Saturday and killed 11 people is the oldest person to carry out such an attack in the U.S., according to research.
The deadly shooting was as horrifying as it was rare.
“This is definitely unique,” said James Densley, president and co-founder of the Violence Project, a nonprofit organization that tracks mass shootings, which the group defines as those involving four or more people killed in a public space.
