What is Replacement Theory? How it's tied to modern mass shootings

In Buffalo, and across different mass shootings in recent years, Replacement Theorists have taken it upon themselves to stop people who they think are trying to ethnically replace them.

California church shooting victim identified: 'Dr. Cheng is a hero'

The heroic actions of a Laguna Niguel doctor who died while trying to save fellow parishioners during Sunday's shooting at Geneva Presbyterian Church are being described by authorities as "literally the meeting of good versus evil."

Buffalo shooting suspect once threatened high school, what else is known about the 18-year-old

New details continue to emerge from authorities about the 18-year-old suspected of killing 10 people at a Buffalo supermarket. Here's what's known so far about the suspect, Payton Gendron.

Buffalo supermarket shooting: What’s known about the victims

Authorities said the gunman shot, in total, 11 Black people and two White people Saturday in a rampage motivated by racial hatred.

Frank James, NYC subway shooting suspect, pleads not guilty

Frank James, who is accused of opening fire in an NYC subway train last month has pleaded not guilty to terrorism and other charges.

New York subway attack: Frank R. James held without bail as police seek motive

Frank R. James, 62, the suspect in the shooting of 10 people aboard an N train in Sunset Park, Brooklyn was ordered held without bail Thursday during his arraignment in Brooklyn federal court. He could spend the rest of his life in prison if found guilty of throwing smoke grenades and opening fire on a crowded train.

Brooklyn subway shooting: Who is suspect Frank R. James? What we know so far

The NYPD has arrested Frank R. James, 62, a suspect wanted in connection to a shooting inside a subway train in Brooklyn. He was believed to have acted alone. Authorities believed he acted alone.

Brooklyn subway shooting: What’s known about the victims

New York authorities said multiple victims suffered injuries from gunshot wounds, shrapnel and smoke inhalation.

1 Sacramento mass shooting suspect released from custody

One of three men arrested in connection with the weekend mass shooting in Sacramento has been released from custody, jail records show.

Sacramento mass shooting: 3rd suspect arrested, police say

A third suspect was arrested in connection with a mass shooting in Sacramento that left six people dead, and 12 others hurt, police said.

Suspect arrested in connection with Sacramento mass shooting, police say

Authorities said Monday that 26-year-old Dandre Martin is connected to a deadly mass shooting in Sacramento that left six people dead over the weekend.

Sacramento mass shooting victims identified

The mass shooting in Sacramento on Sunday killed three men and three women while also injuring 12 others. 

Ethan Crumbley pleads not guilty in Oxford High School shooting charges

Ethan Crumbley is back in court Wednesday for his second arraignment on murder and terrorism charges linked to the Oxford High School shooting last year.

Oxford superintendent: No disciplinary action was warranted for shooting suspect prior to attack

Superintendent Tim Throne said that it would likely be weeks before the school is reopened, adding that it looks like a “war zone" but added how proud he was of his staff and students for their response - while being heartbroken for the victims.