Two people were killed and nine injured in an attack that forced students into an all-night lockdown. The suspect, who is in his 20s, according to local officials, has not been charged.

Brown University teaching assistant Joseph Oduro walks Dana Bash through the horrifying moments when a shooter entered his classroom and opened fire on his students.

Bystander Ahmed al-Ahmad tackled a gunman during the Hanukkah shooting in Sydney on Sunday, saving lives before being shot twice.

Providence Mayor Brett Smiley said that a Brown University student he met at the hospital told him an active shooter drill from high school helped them during the shooting at the school on Saturday.

Dramatic footage shows a man, wearing a light blue shirt and black pants, crouching behind a parked vehicle near the gunman, before disarming him.

Madison school shooter Natalie “Samantha” Rupnow is being idolized and copied in the same violent online community that helped radicalize her.

At least 11 people were killed in a shooting targeting the Jewish community at Australia’s famous Bondi Beach, and 29 people were taken to the hospital. A man believed to be one of the shooters has been killed, New South Wales Police said. The second alleged shooter is in a critical condition.