It was the most deadly act of political violence in Bolivia since 2003.

The bombings make the deadliest act of mass murder at a school in U.S. history.

The attack was the deadliest act of terrorism in the history of Indonesia.

The bombing was called the largest mass murder in modern Canadian history, and the deadliest act of air terrorism before 9/11.

The attack was the deadliest act of terrorism to occur on Turkish soil.

The explosions seem to come out of nowhere, transforming an ordinary routine like going to work or opening a package into a deadly act.

He flatlines, and the doctor runs into the room in time to catch Paul in this deadly act.

It remains the deadliest act of domestic terrorism in American history.

Four black girls died in the explosion at the church, on Sept. 15, 1963, one of the deadliest acts of the civil rights era.

The downing is considered to have been the deadliest act of sabotage in aviation history.